PayPal Website Payments Standard - 2005 User Manual

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Website Payments Standard Checkout Integration Guide

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Last Updated: November 2005

PayPal Website Payments Standard Checkout Integration Guide

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PayPal, Inc. and the authors assume no liability for errors or omissions, or for damages, resulting from the use of this Manual or the information contained in this Manual.

Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Chapter 1 How Website Payments Standard Works . . . . . . . . . .15

Example of the Basic Page Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

How You Get Your Money . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Notifications You Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Email . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Transaction History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Downloadable History Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Instant Payment Notification (IPN). . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

How To Use This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Other Standard Products and Features . . . . . . . . . . . . . . . . . . . . . . . . . 23

Website Payments Pro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Authorization & Capture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Related Online Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Complementary Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter 2 Using Your Merchant Account Profile and Tools . . . . . .27

The Account Profile Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Account Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Financial Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Selling Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Correspondence Between Profile Settings and HTML Variables . . . . . . . . . . . . 28

Branding PayPal’s Payment Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Working with Custom Payment Pages. . . . . . . . . . . . . . . . . . . . . . . . . . 31

Adding or Editing a Page Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Making a Page Style Primary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Overriding Page Style Settings On Individual Transactions . . . . . . . . . . . . . . . 33

Streamlining Purchases with Website Payment Preferences . . . . . . . . . . . . . . . . 34

Account Optional or Website Payments Express . . . . . . . . . . . . . . . . . . . . 35

Auto Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Automatic Calculation of Shipping and Handling Cost and Tax . . . . . . . . . . . . . 45

Blocking Certain Kinds of Payment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

November 20053

Contents

Adding Your Credit Card Statement Name . . . . . . . . . . . . . . . . . . . . . . . . . 49

Getting Customer Contact Telephone Numbers . . . . . . . . . . . . . . . . . . . . . . . 49

Language Encoding Your Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Multi-User Access to Your PayPal Account . . . . . . . . . . . . . . . . . . . . . . . . . 55

PayPal-Supported Currencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Accepting or Denying Cross-Currency Payments . . . . . . . . . . . . . . . . . . . . 57

Managing Currency Balances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Issuing Refunds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Chapter 3 Single-Item Payment: Buy Now and Donations . . . . . . . 61

Using Buy Now or Donations Button Factory . . . . . . . . . . . . . . . . . . . . . . . . 61

Adding More Details to the Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Copy and Paste the HTML Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Sample Buy Now Button HTML and Hyperlink . . . . . . . . . . . . . . . . . . . . . . . . 65

Chapter 4 Multiple-Item Payment: Shopping Cart . . . . . . . . . . . 67

How the PayPal-Hosted Shopping Cart Works . . . . . . . . . . . . . . . . . . . . . . . 67

What The Customer Sees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Button Factory for PayPal-Hosted Shopping Cart . . . . . . . . . . . . . . . . . . . . . . 72

Adding More Details to the Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Copy and Paste the Shopping Cart HTML. . . . . . . . . . . . . . . . . . . . . . . . 74

Sample HTML for PayPal-Hosted Shopping Cart . . . . . . . . . . . . . . . . . . . . . . 75

How A Third-Party Shopping Cart Works . . . . . . . . . . . . . . . . . . . . . . . . . . 76

What The Customer Sees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

What You See . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Adding PayPal to Your Third-party Shopping Cart . . . . . . . . . . . . . . . . . . . . . . 82

Required Third-Party Shopping Cart Variables . . . . . . . . . . . . . . . . . . . . . 82

Passing Individual Item Details to PayPal . . . . . . . . . . . . . . . . . . . . . . . . 82

Setting the Tax for the Entire Cart. . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Passing the Aggregate Shopping Cart Amount to PayPal . . . . . . . . . . . . . . . . 83

Chapter 5 Encrypted Website Payments . . . . . . . . . . . . . . . . 85

Creating Your Public Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Creating Your Private Key Using OpenSSL . . . . . . . . . . . . . . . . . . . . . . . 86

Creating Your Public Certificate Using OpenSSL . . . . . . . . . . . . . . . . . . . . 86

Uploading Your Public Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

4 November 2005

Contents

Downloading PayPal's Public Certificate. . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Removing Your Public Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Blocking Unencrypted Website Payments . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Chapter 6 Testing in the PayPal Sandbox . . . . . . . . . . . . . . . 89

Chapter 7 Website Payments Standard HTML FORM Basics . . . . . . 91

FORM Attributes: ACTION and METHOD . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Hidden Input Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Specifying the Website Payments Standard Product: cmd . . . . . . . . . . . . . . . . . 92

Variations on Basic Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Prompting for Quantity in Buy Now or Donations: undefined_quantity . . . . . . . . . 92

Recordkeeping with Passthrough Variables . . . . . . . . . . . . . . . . . . . . . . . 92

Setting the Character Set: charset. . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Setting Return URL on Individual Transactions . . . . . . . . . . . . . . . . . . . . . 93

Desired Currency on Individual Transactions . . . . . . . . . . . . . . . . . . . . . . 93

URL-Encoding Variable Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Prepopulating FORMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Sample HTML for FORM Prepopulation . . . . . . . . . . . . . . . . . . . . . . . . . 94

Overriding PayPal-Stored Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Sample HTML for Overriding PayPal-Stored Shipping Addresses . . . . . . . . . . . 95

Instant Payment Notification: notify_url . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Appendix A Website Payments Standard HTML Variables . . . . . . . .99

Appendix B Country Codes . . . . . . . . . . . . . . . . . . . . . . 109

ISO 3166 Standard Country Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

November 20055

Contents

6 November 2005

List of Tables

Table 1.1 How To Use This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 1.2 Hyperlinks for Fees, Security, User Agreement, Policies, Online Help, and

Customer Service 24

Table 1.3 PayPal Technical Documentation . . . . . . . . . . . . . . . . . . . . . 25

Table 2.1 Order of Page Style Customization Variables . . . . . . . . . . . . . . . 33

Table 2.2 PayPal-Supported Currencies, Currency Codes, and Maximum Transaction

Amounts 56

Table 4.1 Required Third-Party Shopping Cart Variables . . . . . . . . . . . . . . 82

Table 5.1 How Encrypted Website Payments Work . . . . . . . . . . . . . . . . . 85

Table 7.1 Allowed Values for cmd Variable . . . . . . . . . . . . . . . . . . . . . . 92

Table 7.2 Character Sets and Encodings Supported by PayPal . . . . . . . . . . . 93

Table A.1 Allowed Values for cmd Variable . . . . . . . . . . . . . . . . . . . . . . 99

Table A.2 HTML Variables: IPN Control notify_url. . . . . . . . . . . . . . . . . . . 99

Table A.3 HTML Variables: Item Information . . . . . . . . . . . . . . . . . . . . . 99

Table A.4 HTML Variables: Display Information. . . . . . . . . . . . . . . . . . . .100

Table A.5 HTML Variables: Transaction Information . . . . . . . . . . . . . . . . .103

Table A.6 HTML Variables Specific to Shopping Carts . . . . . . . . . . . . . . . .104

Table A.7 HTML Variables: Individual Items in Third-Party Shopping Carts . . . . .104

Table A.8 HTML Variables: Prepopulating PayPal FORMs or Address Overriding . .105

Table A.9 HTML Variables: Prepopulating Business Account Sign-up . . . . . . . .106

Table B.1 ISO 3166 Two-Character Country Codes. . . . . . . . . . . . . . . . . .109

Website Payments Standard Checkout Integration Guide November 2005 7

List of Tables

8 November 2005Website Payments Standard Checkout Integration Guide

List of Figures

Figure 1.1 Basic Website Payments Standard Page Sequence . . . . . . 15

Figure 1.2 Beginning of Basic Page Sequence on Your Website . . . . . . 16

Figure 1.3 Customer Logs In to or Signs Up for PayPal . . . . . . . . . 17

Figure 1.4 Customer Reviews Payment . . . . . . . . . . . . . . . . . 18

Figure 1.5 Payment Confirmation or “You Made a Payment” Page on PayPal 19

Figure 1.6 Customer Returns to Your Website . . . . . . . . . . . . . 20

Figure 1.7 Account History: Recent Activity . . . . . . . . . . . . . . . 21

Figure 2.1 Account Profile Summary Page . . . . . . . . . . . . . . . 27

Figure 2.2 Uncustomized Payment Page in Standard PayPal Page Style . . 29

Figure 2.3 Complete Custom Page Style . . . . . . . . . . . . . . . . 30

Figure 2.4 Edit Custom Page Style Page . . . . . . . . . . . . . . . . 31

Figure 2.5 Website Payment Preferences on the Profile Summary Page . . 34

Figure 2.6 Page Sequence with PayPal Account Optional . . . . . . . . . 35

Figure 2.7 Momentary “You Made a Payment Page” with Auto Return On . 44

Figure 2.8 Payment Receiving Preferences . . . . . . . . . . . . . . . 47

Figure 2.9 Adding a Credit Card Statement Name . . . . . . . . . . . . 49

Figure 2.10 Prompt for Customer Contact Telephone Number . . . . . . . 50

Figure 2.11 Profile Selling Preferences for Language Encoding . . . . . . 51

Figure 2.12 Language Encoding Settings: Basic Choices . . . . . . . . . 52

Figure 2.13 Website Language Preference . . . . . . . . . . . . . . . . 53

Figure 2.14 More Language Encoding Options . . . . . . . . . . . . . . 54

Figure 2.15 Multi-User Access Link in Account Profile Summary . . . . . . 55

Figure 2.16 Multi-User Access: Adding a User . . . . . . . . . . . . . . 56

Figure 2.17 Accepting or Denying a Cross-Currency Payment . . . . . . . 57

Figure 4.1 PayPal-Hosted Shopping Cart Example: Add to Cart . . . . . 68

Figure 4.2 PayPal-Hosted Shopping Cart Example: Logging In to PayPal during

Checkout 69

Figure 4.3 PayPal-Hosted Shopping Cart Example: Confirmation Page . . 70

Figure 4.4 PayPal-Hosted Shopping Cart Example: Thank You Page After

Payment 71

Figure 4.5 PayPal-Hosted Shopping Cart Example: Email Transaction Receipt .

Figure 4.6 Third-party Shopping Cart Example: Add to Cart . . . . . . . 76

November 2005 9

List of Figures

Figure 4.7 Third-Party Shopping Cart Example: Proceed to Checkout . . . 77

Figure 4.8 Third-Party Shopping Cart Example: Logging In to PayPal during

Figure 4.9 Third-Party Shopping Cart Example: Confirmation Page . . . . 79

Figure 4.10 Shopping Cart Example: Thank You Page After Payment . . . 80

Figure 4.11 Example: Email Transaction Receipt . . . . . . . . . . . . . 80

Figure 4.12 Example: Seller’s Email Receipt . . . . . . . . . . . . . . . 81

Figure 5.1 Upload Public Certificate for EWP . . . . . . . . . . . . . . 87

Figure 5.2 Download PayPal’s Public Certificate for EWP . . . . . . . . . 88

Figure 7.1 How IPN Works: Three General Steps . . . . . . . . . . . . 96

Checkout 78

10 November 2005

List of Examples

Example 2.1 Flat Amount Shipping Calculation . . . . . . . . . . . . . . . . . . . . . 46

Example 2.2 Percentage Shipping Calculation . . . . . . . . . . . . . . . . . . . . . . 46

Example 3.1 HTML for Buy Now Button . . . . . . . . . . . . . . . . . . . . . . . . . 65

Example 4.1 HTML for PayPal-Hosted Shopping Cart “Add to Cart” Button . . . . . . . 75

Example 4.1 HTML for Passing Individual Item Detail to PayPal. . . . . . . . . . . . . 83

Example 4.2 HTML for Aggregate Cart Detail to PayPal . . . . . . . . . . . . . . . . . 84

Example 7.1 HTML for FORM Prepopulation. . . . . . . . . . . . . . . . . . . . . . . 94

Example 7.2 HTML for Overriding PayPal-Stored Address. . . . . . . . . . . . . . . . 95

Website Payments Standard Checkout Integration Guide November 2005 11

List of Examples

12 November 2005 Website Payments Standard Checkout Integration Guide

Preface

This Document

This document, the PayPal Website Payments Standard Checkout Integration Guide, is a complete revision of the version issued in September 2005.

Intended Audience

This document is for merchants whose websites obtain payments using PayPal features.

Notational Conventions

This document uses typefaces to identify the characteristics of text. These typefaces and the characteristics they imply are described below:

Typeface How Used

serif italics A document title.

A term being discussed or defined. For example: A file is a readable or writable stream of characters.

Boolean values (not keywords). For example: The function returns true if it encounters an error.

monospaced Pathnames or file names that appear in body text frames.

Code-related names that appear in body text frames. Such names are used for functions, callbacks, arguments, data structures, and fields.

For example: AbstractResponseType is the SOAP response type definition on which all PayPal API response methods are based.

Components of internet protocol requests and responses, such as HTTPS and FORM variables.

For example: The PayPal system uses a method=POST request to return IPN status variables related to subscriptions, such as txn_type.

Serif bold User interface names such as window names or menu selections.

For example: On the Profile page, click Email to confirm your email address.

San-serif oblique

Placeholders used in the context of a format or programming standard or formal descriptions of PayPal system syntax. Placeholders indicate values or names that the reader should provide.

Example: For example, amount is the variable for a single-item shopping cart, but

amount_

is the item amount for the third item in a multiple-item shopping cart.

X is the name of the variable for a multi-item shopping cart. amount_3

Website Payments Standard Checkout Integration Guide November 2005 13

Preface

To convey additional information, this document may also apply color and underlining to words or phrases that use the typefaces described above. Such use is described below:

Text attribute How Used

xxxxxx

Documentation Problems

Hypertext link to a page in the current document or to another document in the set.

Hypertext link to a URL or that initiates a web action, such as sending mail.

If you discover any errors in or have any problems with this documentation, please mail us by following the instructions below. Describe the error or problem in as much detail as possible and give us the document title, the date of the document (located at the foot of every page), and the page number or page range.

To contact Customer Service about documentation problems:

1. Go to

https://www.paypal.com/.

2. Click Help in the upper left corner of the page.

3. Click Contact Us in the lower left corner of the page.

4. In the Help by Email section, click Contact PayPal Customer Service.

5. Complete the form.

To contact Developer Technical Support about documentation problems:

1. Go to

https://developer.paypal.com/.

2. Log in to your account by entering your email address and password in the Member Log In box.

3. Click Help Center at the bottom of the box on the right side of the page.

4. Click Email PayPal Technical Support.

5. Complete the form.

14 November 2005 Website Payments Standard Checkout Integration Guide

How Website Payments Standard Works

The PayPal Website Payments Standard Checkout Integration Guide describes how you use Website Payments Standard. Website Payments Standard consists of HTML FORMs on your website that direct your customer’s web browser to the PayPal website at

http://www.paypal.com in order to pay you and then return the customer to your website.

Figure 1.1, “Basic Website Payments Standard Page Sequence,” shows the basic sequence of

web browser pages when a customer pays you with PayPal Website Payments Standard.

FIGURE 1.1 Basic Website Payments Standard Page Sequence

All features of Website Payments Standard are variations on this basic page sequence. You use HTML FORM variables and the settings in your PayPal account Profile to affect the behavior of the basic sequence.

Website Payments Standard Checkout Integration Guide November 2005 15

How Website Payments Standard Works

Example of the Basic Page Sequence

Here’s an example of the basic page sequence of Website Payments Standard. Like all examples of pages in this guide, this example is based on the PayPal sample integration, which demonstrates how PayPal has been integrated with the fictitious online store called “DesignerFotos.”

BEGIN. The customer chooses to pay with PayPal on your website.

FIGURE 1.2 Beginning of Basic Page Sequence on Your Website

This example illustrates PayPal Buy Now, which is discussed in Chapter 3, “Single-Item

Payment: Buy Now and Donations.”

16 November 2005 Website Payments Standard Checkout Integration Guide

How Website Payments Standard Works

Example of the Basic Page Sequence

The customer logs in to PayPal.

FIGURE 1.3 Customer Logs In to or Signs Up for PayPal

If the customer were new to PayPal, the customer could choose to sign up for a PayPal account.

Website Payments Standard Checkout Integration Guide November 2005 17

How Website Payments Standard Works

Example of the Basic Page Sequence

On PayPal, the customer reviews the details of the payment and makes the payment.

FIGURE 1.4 Customer Reviews Payment

At this point, the customer can choose among funding sources (credit cards, debit cards, or bank accounts recorded in the PayPal accounts) with which to pay you and can also choose among shipping addresses stored on PayPal. This example does not show the pages containing these options.

18 November 2005 Website Payments Standard Checkout Integration Guide

How Website Payments Standard Works

Example of the Basic Page Sequence

The customer sees a payment confirmation page on PayPal and clicks Return to

Merchant.

FIGURE 1.5 Payment Confirmation or “You Made a Payment” Page on PayPal

Website Payments Standard Checkout Integration Guide November 2005 19

How Website Payments Standard Works

Example of the Basic Page Sequence

END. The customer is returned to your website.

FIGURE 1.6 Customer Returns to Your Website

20 November 2005 Website Payments Standard Checkout Integration Guide

How You Get Your Money

After a customer makes a payment, your PayPal account lists the payment in your Account History, as shown below.

FIGURE 1.7 Account History: Recent Activity

How Website Payments Standard Works

How You Get Your Money

Notifications You Receive

You can be notified of payments in four ways: email, History Log, Downloadable History Log, and Instant Payment Notification (IPN).

Email

You receive email notification in the following cases:

z Successful payment

z Pending payment

z Canceled payment

If you do not want to receive email notification:

1. Click the Profile subtab of the My Account tab.

2. Click the Notifications link in the Account Information column.

Website Payments Standard Checkout Integration Guide November 2005 21

How Website Payments Standard Works

Notifications You Receive

3. Under the Payment Notifications heading, clear the I receive PayPal Website Payments and Instant Purchase checkbox.

4. Click Save.

Transaction History

Your transaction history (also called your “History) displays information about your payments. The status of each payment is one of the following statuses:

z Completed: The transaction was successful and the money was credited to your account

z Cleared: The payment cleared the sender’s account and was credited to your account

z Uncleared: The payment has not cleared the sender’s account yet

Downloadable History Log

You can download copies of your transaction history to your computer. You can specify a date range for the transactions and the format of the downloadable file. The file contains a record of your transactions.

To learn more about Downloadable History Logs, see the Order Management Integration Guide.

Instant Payment Notification (IPN)

Instant Payment Notification is a mechanism by which you to receive transaction data. IPN posts individual transaction information to a URL on your website that you have programmed to process this incoming data. To use IPN, you must activate it, because it is disabled by default.

If IPN is activated, you receive a notification in the following cases:

z When a payment is first sent, indicating that the status of the payment is Completed or

Pending

z When a payment clears, fails, or is denied, if the status was pending

To learn more about IPN, see “Instant Payment Notification: notify_url” on page 96 and the Order Management Integration Guide.

22 November 2005 Website Payments Standard Checkout Integration Guide

How Website Payments Standard Works

How To Use This Guide

Website Payments Standard has two primary components: Buy Now or Donations buttons and Shopping Cart. Both are constructed with the same basic set of HTML FORM variables. You can affect their behavior and appearance with settings in your account Profile and with additional FORM variables.

The following table summarizes the contents of this guide.

TABLE 1.1 How To Use This Guide

Feature Description See Also...

Buy Now or

Paying for single items from your website.

Donations

Shopping Cart Paying for multiple items from your website. It

comes in two forms: a shopping cart hosted on PayPal’s website and as HTML FORM variables for use in third-party shopping carts.

Custom Payment Pages Account Profile settings that brand PayPal’s pages

with your own colors and images.

“Account Optional” or Website Payments Express

Auto Return Account Profile settings that eliminate PayPal’s

Automatic Calculation of Shipping, Handling, and Tax

Customer Contact Telephone

Account Profile setting that allows a customer to pay you with credit or debit cards without having a PayPal account.

payment receipt page (step 4 in

Website Payments Standard Page Sequence

Account Profile settings that calculate shipping and handling costs and sales tax for you.

Account Profile setting that sends you the customer’s contact telephone number.

Figure 1.1, “Basic

Chapter 3, “Single-Item Payment: Buy Now and Donations

”

Chapter 4, “Multiple-Item Payment: Shopping Cart

”

“Branding PayPal’s Payment Pages” on page 29

“Account Optional or Website Payments Express” on page 35

“Auto Return” on page 43

“Automatic Calculation of Shipping and Handling Cost and Tax” on page 45

“Getting Customer Contact Telephone Numbers” on page 49

Multi-User Access Account Profile setting that allows up to seven

email addresses to share your Business account.

Encrypted Website Payments

Encrypt payment information before it is sent to PayPal to protect customer data.

“Multi-User Access to Your PayPal Account” on page 55

Chapter 5, “Encrypted Website Payments

”

Other Standard Products and Features

Website Payments Standard also includes other products and features not detailed in this guide:

Website Payments Standard Checkout Integration Guide November 2005 23

How Website Payments Standard Works

Related Online Information

z Instant Payment Notification (IPN) and Payment Data Transfer (PDT) are HTML FORM-

based mechanisms to send information about payments to programs on your website. IPN and PDT are described in the

z Subscriptions and Recurring Payments, which are described in the Subscriptions and

Recurring Payments Guide

Website Payments Pro

Website Payments Pro consists of PayPal Express Checkout and the Direct Payment Application Programming Interfaces (APIs). Rather than being based solely on HTML FORM variables (as is Website Payments Standard), these products rely on the PayPal Web Services API. For more information, see the

Authorization & Capture

Authorization & Capture supplements both Website Payments Standard and Website Payments Pro with PayPal’s enhancements to conventional credit card authorization and payment capture. It has both PayPal website tools and a Web Services Application Programming Interface (API). For more information, see the

Integration Guide.

Order Management Integration Guide.

Website Payments Pro Integration Guide.

Authorization & Capture

Related Online Information

Consult the following URLs for information about PayPal’s fees, online security, user agreement and related policies, online help, and customer service.

TABLE 1.2 Hyperlinks for Fees, Security, User Agreement, Policies, Online Help, and Customer

Service

Information URL

Fees https://www.paypal.com/fees

Online Security https://www.paypal.com/security

User Agreement and Policies

Online Help https://www.paypal.com/help

Customer Service https://www.paypal.com/wf

https://www.paypal.com/cgi-bin/webscr?cmd=p/gen/ua/ua-outside

24 November 2005 Website Payments Standard Checkout Integration Guide

How Website Payments Standard Works

Complementary Documentation

All PayPal technical documentation is listed here. The description of each guide indicates its subject matter and documentation necessary for effective use of the guide.

TABLE 1.3 PayPal Technical Documentation

Guide Title Description Prerequisites

Website Payments Standard Integration Guide

Express Checkout Integration Guide

Website Payments Pro Integration Guide

Authorization & Capture Integration Guide

Details basic PayPal payment process for shopping cart and single-item purchase. Account Profile settings for variations on basic payment process. Customization of PayPal's payment pages. HTML

FORM variables for control of payment process.

https://www.paypal.com/en_US/pdf/PP_WebsitePaymentsStandard_Integrati onGuide.pdf

Details use of Express Checkout API. PayPal placement on merchants' websites and related business rules.

https://www.paypal.com/en_US/pdf/PP_ExpressCheckout_IntegrationGuide.p df

Details use of Express Checkout and Direct Payment APIs. PayPal placement on merchants' websites and related business logic.

https://www.paypal.com/en_US/pdf/PP_WebsitePaymentsPro_IntegrationGui de.pdf

Details use of PayPal website and API for authorization and capture; relates Authorization & Capture to Express Checkout and Direct Payment.

https://www.paypal.com/en_US/pdf/PP_AuthCapture_IntegrationGuide.pdf

None

Website Payments Standard Integration Guide

z Website

Payments Standard Integration Guide

z Website

Payments Pro Integration Guide

z API Reference

Order Management Integration Guide

Details Instant Payment Notification (IPN) and Payment Data Transfer (PDT) for automated receipt of payment information after payment completion. Details IPN

FORM variables and their meanings. Also includes information about

HTML Downloadable History Logs.

Website Payments Standard Integration Guide

https://www.paypal.com/en_US/pdf/PP_OrderManagement_IntegrationGuide .pdf

Website Payments Standard Checkout Integration Guide November 2005 25

How Website Payments Standard Works

Complementary Documentation

TABLE 1.3 PayPal Technical Documentation

Guide Title Description Prerequisites

Java SDK Guide .NET SDK Guide Classic ASP Guide PHP SDK Guide

Details the use of the PayPal Software Development Kits for Java, Microsoft .NET, Microsoft Classic ASP, and PHP to simplify use of the PayPal Web Services API.

https://www.paypal.com/en_US/pdf/PP_SDK_Java_Guide.pdf https://www.paypal.com/en_US/pdf/PP_SDK_NET_Guide.pdf https://www.paypal.com/en_US/pdf/PP_SDK_ClassicASP_Guide.pdf https://www.paypal.com/en_US/pdf/PP_SDK_PHP_Guide.pdf

Sandbox User Guide Describes the PayPal Sandbox testing environment for testing website payments and

Web Services APIs. Details how to get PayPal API digital certificates.

https://www.paypal.com/en_US/pdf/PP_Sandbox_UserGuide.pdf

Web Services API Reference

Field-by-field description of all PayPal Web Services APIs, their SOAP structures, and error messages. Location of PayPal WSDL and XSD files.

https://www.paypal.com/en_US/pdf/PP_APIReference.pdf

z Website

Payments Standard Integration Guide

z Website

Payments Pro Integration Guide

z Authorization &

Capture Integration Guide

z Sandbox User

Guide

z API Reference

All other PayPal guides for an understanding of how products work

None

Subscriptions and Recurring Payments Guide

Virtual Terminal User Guide

Describes HTML services.

FORM variables for using PayPal for subscriptions to goods and

https://www.paypal.com/en_US/pdf/subscriptions.pdf

Details how to use the virtual terminal to accept credit card payments.

https://www.paypal.com/en_US/pdf/VT_user_guide.pdf

Website Payments Standard Integration Guide

None

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Using Your Merchant Account

Profile and Tools

This chapter details how you can use your account Profile settings and other tools on the PayPal website to affect how payments are processed.

The Account Profile Summary

Use your PayPal account Profile to manage information about your PayPal account. To see your Profile, log in to your PayPal account, and click the Profile subtab of the My Account tab. The Profile has three sections: Account Information, Financial Information, and Selling Preferences.

FIGURE 2.1 Account Profile Summary Page

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Using Your Merchant Account Profile and Tools

The Account Profile Summary

Account Information

Use the Account Information column for basic account maintenance, including updating your password, adding and confirming email addresses, managing your business information, and (for Premier accounts) configuring multi-user access to your PayPal account.

Financial Information

Use the Financial Information column to organize and maintain the financial instruments associated with your PayPal account: manage your credit cards and bank accounts, activate and manage your PayPal Debit Card, maintain multiple currency balances, and view your monthly account statements.

Selling Preferences

Use the Selling Preferences column to organize the way you sell with your PayPal account, including:

z Branding PayPal’s payment pages

z Streamlining purchases with Website Payment Preferences:

– Account Optional –Auto Return – Automatic calculation of shipping, handling, and sales tax

z Payment receiving preferences for blocking certain kinds of payments

z Getting customers’ contact telephone numbers

z Language encoding your data

The majority of this chapter focuses on using Selling Preferences.

Correspondence Between Profile Settings and HTML Variables

Many Profile settings have equivalent HTML FORM variables that can control the behavior of individual transactions. After you enable a setting in your Profile, you can include FORM variables with a transaction to take advantage of that Profile setting. See the following sections for more information:

z “Overriding Page Style Settings On Individual Transactions” on page 33

z “Overriding Tax Setting on Individual Transactions” on page 46

z “Overriding Shipping Calculation on Individual Transactions” on page 46

z “Setting the Character Set: charset” on page 93

z “Setting Return URL on Individual Transactions” on page 93

z “Desired Currency on Individual Transactions” on page 93

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Branding PayPal’s Payment Pages

With our Custom Payment Pages feature, you can tailor PayPal’s payment pages to the style of your website. Custom Payment Pages work with all PayPal Website Payment buttons and with the PayPal Account Optional feature.

You can add up to three custom page styles.

The pictures in this section demonstrate the types of customization you can add to your PayPal Website Payment buttons. Figure 2.2, “Uncustomized Payment Page in Standard PayPal Page

Style,” shows a payment page with no customization.

FIGURE 2.2 Uncustomized Payment Page in Standard PayPal Page Style

Branding PayPal’s Payment Pages

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Branding PayPal’s Payment Pages

Figure 2.3, “Complete Custom Page Style,” shows all the customization you can make.

FIGURE 2.3 Complete Custom Page Style

Page header image Page header border color Page header background color

Page background color

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Working with Custom Payment Pages

1. Log in to your PayPal account at https://www.paypal.com.

2. Click the Profile subtab.

3. In the Selling Preferences column, click Custom Payment Pages.

The customization page shown in Figure 2.4, “Edit Custom Page Style Page,” is displayed.

FIGURE 2.4 Edit Custom Page Style Page

Branding PayPal’s Payment Pages

From this page, you can add, edit, preview, and remove page styles, and make any defined page style the primary page style.

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Branding PayPal’s Payment Pages

Adding or Editing a Page Style

The settings described here can also be specified with HTML FORM input variables set for individual transactions. For more information, see Table A.4, “HTML Variables: Display

Information” on page 100.

To add a page style:

1. Begin at the Custom Payment Page Styles page.

2. Click Add or Edit.

3. Enter your page style preferences:

z Page Style Name (required)

Enter a name up to 30 characters long. The name can contain letters, numbers, and underscores but no other symbols or spaces. The Page Style Name is used to refer to the page style in your PayPal account and in the HTML FORM Website Payment buttons.

z Header Image URL (optional)

Enter the URL for an image that should appear at the top left of the payment page. Maximum size of the image is 750 pixels wide by 90 pixels high; larger images are reduced to this size. The image must be in a valid graphics format such as gif, jpg, or png.

page_style variable for your

IMPORTANT:PayPal recommends that you enter an image URL only if the image is stored

on a secure (https) server. Otherwise, your customer’s web browser displays a message that the payment page contains insecure items.

z Header Background Color (optional)

Enter the background color for the header using HTML hex code. The color code must be six digits long and should not contain the # symbol. If the Header Image URL is present, the header is a 750 pixel wide by 90 pixel high space at the top of the payment page. If the Header Image URL is not present, the header height is only 45 pixels high.

z Header Border Color (optional)

Enter the border color for the header using HTML hex code. The color code must be six digits long and should not contain the # symbol. The header border is a two-pixel perimeter around the header space.

z Background Color (optional)

Enter the background color for the payment page using HTML hex code. The color code must be six digits long and should not contain the # symbol.

4. Click Preview to preview your page style, or click Save to save it.

Disallowed Colors. Because PayPal’s error message system highlights errors in red, PayPal

does not allow certain background colors that make these error messages unreadable.

A background color is allowed if you are able to preview the payment page with your chosen background color. If you receive an error message about the background color, the color is not allowed.

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About Font Colors. PayPal dynamically changes font colors from black to white, depending

on the background color. To confirm that these font changes comply with your font color selections, you should test your color settings on PayPal.

Making a Page Style Primary

When you make a page style primary, it is applied to all payment pages unless you specify otherwise on individual transactions.

NOTE: If you do not designate a page style as Primary, the default is the PayPal page style.

To make a page style primary:

1. Begin at the Custom Payment Page Styles page shown in Figure 2.4, “Edit Custom Page

Style Page” on page 31.

2. Click the radio button next to the page style you wish to make your primary style.

3. Click Make Primary.

4. Click Make Primary to confirm your choice.

Using Your Merchant Account Profile and Tools

Branding PayPal’s Payment Pages

Overriding Page Style Settings On Individual Transactions

Your primary page style is applied to all payment pages unless you specify otherwise. You can override this behavior by specifying custom page style variables on individual transactions.

To change the page style for a button you already created, replace the value of the page_style variable with the page style name you want to use. The next time the button is clicked, the subsequent payment pages appear in the new style.

When you specify custom payment page variables on individual transactions, the page variables override page styles set in your Profile or the page_style variable. Customization variables take precedence in the following order:

TABLE 2.1 Order of Page Style Customization Variables

Custom Option Description

1 Custom Payment Pages

Variables on Individual Transactions

2 Primary Page Style on

Individual Transactions

3 Primary Page Style in

Profile

See

Table A.4, “HTML Variables: Display Information” on

page 100

With the on individual transactions that overrides any page styles set in your Profile.

You can create and set the primary style in your Profile.

page_style variable, you can specify a page style

4 Default PayPal Page

Style in Profile

Website Payments Standard Checkout Integration Guide November 2005 33

The default page style used when an alternative is not selected and designated as primary.

Using Your Merchant Account Profile and Tools

Streamlining Purchases with Website Payment Preferences

You can speed up your customers’ purchases with three Profile settings:

z Account Optional

z Auto Return

z Automatic calculation of shipping and handling cost and taxes

These settings are part of the Website Payment Preferences of your account Profile Selling Preferences.

FIGURE 2.5 Website Payment Preferences on the Profile Summary Page

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Streamlining Purchases with Website Payment Preferences

Account Optional or Website Payments Express

Account Optional (also known as Website Payments Express) is a Profile setting that allows customers new to PayPal to pay you by credit card without signing up for a PayPal account, thus shortening their time and effort.

Customers who have PayPal accounts go through the same Website Payments page sequence shown in Figure 1.1, “Basic Website Payments Standard Page Sequence” on page 15. Customers who are new to PayPal go through a page sequence that does not require PayPal signup, with the option to sign up after completing the payment.

FIGURE 2.6 Page Sequence with PayPal Account Optional

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Streamlining Purchases with Website Payment Preferences

Turning PayPal Account Optional On or Off

1. Log in to your PayPal account at https://www.paypal.com.

2. Click the Profile subtab.

3. Click the Website Payment Preferences link in the Selling Preferences column. See

Figure 2.5, “Website Payment Preferences on the Profile Summary Page” on page 34.

4. Scroll down to the PayPal Account Optional section of the page.

5. Select On to turn PayPal Account optional on, or Off to turn it off and use the basic

Website Payments flow.

6. Click Save to save your preference.

What Your Customer Sees With Account Optional On

Step 1: Bob goes to the DesignerFotos website and clicks Buy Now.

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Streamlining Purchases with Website Payment Preferences

Step 2: Bob is taken to a Payment Details page. He is prompted to log in to his PayPal account. He is not a PayPal member, so he clicks Secure Checkout.

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Streamlining Purchases with Website Payment Preferences

Step 3: Bob is prompted to enter the shipping information for the purchase, and to indicate if his shipping address is the same as the billing address on his credit card.

Accepting the default selection of Yes, Bob clicks Continue Checkout and is taken to the page shown in Step 4.

NOTE: If Payment Receiving Preferences are set to accept payments from customers only with

confirmed addresses, the customer skips this shipping information page and goes directly to billing information in Step 4.

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Streamlining Purchases with Website Payment Preferences

Step 4: Bob is prompted to enter billing information for the credit card for the purchase.

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Using Your Merchant Account Profile and Tools

Streamlining Purchases with Website Payment Preferences

Step 5: Bob is taken to a review page. He clicks Pay to complete his purchase.

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Streamlining Purchases with Website Payment Preferences

Step 6: Bob is taken to a payment completion page where he sees the Receipt ID for this transaction and DesignerFoto’s customer service contact information.

If Bob clicks Save My Info, he is taken to a page where he can enter the rest of the information needed to create a PayPal account (see Step 7). The information Bob entered to complete the transaction is carried forward.

If he clicks Return to Merchant, he is redirected to back to the merchant’s website.

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Using Your Merchant Account Profile and Tools

Streamlining Purchases with Website Payment Preferences

Step 7: If Bob clicked Save My Info, he is taken to a page where he can complete signing up for a PayPal account. Once he has filled in the fields, he clicks Save Information to create the account.

Step 8: Bob sees a page that confirms the creation of his account.

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Streamlining Purchases with Website Payment Preferences

Step 9: Bob receives an email receipt that confirms his payment and includes a copy of the payment details for this transaction.

Auto Return

With Auto Return for Website Payments, you can avoid making your customers click an extra button before returning to your website after completing a payment. Auto Return applies to all Website Payments, including Buy Now, Donations, Shopping Cart, and Subscriptions.

What Your Customer Sees with Auto Return On

With Auto Return on, instead of having to click a button on the You Made a Payment page (which is annotated as a circled 3 in Figure 1.1 and shown in Figure 1.5), the customer sees a payment confirmation page for a few seconds before the browser is returned to your website, as shown in Figure 2.7, “Momentary “You Made a Payment Page” with Auto Return On.”

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Using Your Merchant Account Profile and Tools

Streamlining Purchases with Website Payment Preferences

FIGURE 2.7 Momentary “You Made a Payment Page” with Auto Return On

Turning On Auto Return

To turn Auto Return on:

1. Log in to your PayPal account at

2. Click the Profile subtab.

3. Under the Selling Preferences column, click Website Payment Preferences. See

Figure 2.5, “Website Payment Preferences on the Profile Summary Page” on page 34.

4. Under Auto Return for Website Payments, click the On radio button to enable Auto Return.

https://www.paypal.com.

5. In the Return URL field, enter the URL to which you want your buyers redirected after payment completion.

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Streamlining Purchases with Website Payment Preferences

NOTE: If the Return URL you supply is not valid, PayPal displays the standard You Made a

Payment page when payment is complete.

6. Click Save.

Setting Return URL on Individual Transactions

With Auto Return turned on in your Profile, you can set the value of the return URL on each individual transaction, overriding the value you have stored on PayPal. For example, you might want to return the customer’s browser to a URL on your site that is specific to that customer, perhaps with a session-id or other transaction-related data included in the URL.

To set the return URL for a transaction, include the return variable in the HTML FORM:

Subscriptions Password Management and Auto Return

If you use or plan to use Subscriptions Password Management, you must make sure that Auto Return is turned off in order to display the PayPal-generated username and password to the buyer.

NOTE: You can use Auto Return with Subscriptions, which is a separate feature from

Subscription Password Management. For more information about Subscriptions, see the Subscriptions and Recurring Payments Guide, which is available on the PayPal website.

Automatic Calculation of Shipping and Handling Cost and Tax

You can set up your PayPal account to automatically calculate and charge shipping and sales tax (also called value added tax or VAT).

You can set up your PayPal account to automatically calculate and charge shipping.

To view or modify your sales tax and shipping charges:

1. Log in to your PayPal account at

2. Click the Profile subtab of the My Account tab.

3. In the Selling Preferences column, click Sales Tax or Shipping Calculation.

Sales or Value Added Tax Collection

You can charge your customers tax by choosing a country or state from the Country and U.S. State drop-down menus, and entering your tax rate for that state. All customers who reside in

the country or state you select are automatically charged the tax rate you choose. You can specify a different tax rate for each U.S. state and any of the listed countries.

IMPORTANT:If you are entering the rate for a U.S. state, ensure that the Country drop-

down menu is set to United States.

https://www.paypal.com.

https://www.paypal.com/cn.

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Streamlining Purchases with Website Payment Preferences

With the radio buttons, you can apply tax either to the item itself or to an item and any shipping and handling costs.

Click Save to save your changes.

Overriding Tax Setting on Individual Transactions

Regardless of a customer’s location, you can set a flat tax amount on an individual transaction or items in the transaction. For more information, see “Setting the Tax for the Entire Cart” on

page 83.

Shipping Calculation

Determine if you want to charge shipping as a flat amount or a percentage of the total purchase amount.

Flat Amount. A flat amount is based on the subtotal of a purchase. Choose the Flat Amount

radio button (indicated by $), and enter a flat amount for each currency amount increment. Click Save to save your changes.

EXAMPLE 2.1 Flat Amount Shipping Calculation

Assume your flat amount settings are as follows:

$0.00 through $49.99 = $3.00

$50.00+ = $6.00

If the subtotal is $36.50, your customer is charged $3.00 for shipping, and the total purchase $39.50.

If the subtotal is $66.50, your customer is charged $6.00 for shipping, and the total purchase $72.50.

Percentage. A percentage is based on the subtotal of a purchase. Choose the Percentage

radio button (indicated by %), and enter a percentage for each currency amount increment. Click Save to save your changes.

EXAMPLE 2.2 Percentage Shipping Calculation

Assume your percentage settings are as follows:

$0.00 through $49.99 = 5%

$50.00+ = 4%

If the subtotal is $36.50, your customer is charged 5% x $36.50 = $1.83 for shipping, and the total purchase $38.33.

If the subtotal is $66.50, your customer is charged 4% x $66.50 = $2.66 for shipping, and the total purchase $69.16.

Overriding Shipping Calculation on Individual Transactions

You might want to set a special shipping rate for an item; for example, if the item is especially heavy and costs more to ship or if it is a service which does not require shipping charges. To

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charge a different shipping amount for an item, include the shipping cost in the shipping and handling_cart variables in the HTML FORM for the button.

You must set your Profile to allow individual transactions to override the Profile shipping calculation settings:

1. Go to the Shipping Calculations page in your Profile.

2. Click the checkbox labeled Click here to allow transaction-based shipping values to override the profile shipping settings listed above (if profile settings are enabled).

3. Click Save.

Blocking Certain Kinds of Payment

Payment Receiving Preferences let you block the types of payments you receive.

FIGURE 2.8 Payment Receiving Preferences

Blocking Certain Kinds of Payment

Blocking Payments From U.S. Users Without a Confirmed Address

You can better manage your risk by blocking payments where the buyer chooses not to share his Confirmed Address with you. PayPal provides Confirmed Addresses to help you make informed decisions when shipping goods. To be eligible for PayPal's Seller Protection Policy (SPP), and to help reduce your risk of dealing with fraudulent buyers, ship to a buyer’s Confirmed Address.

There are three choices for this preference:

z Yes: All payments from U.S. buyers without a Confirmed Address are blocked. All U.S.

buyers must provide a Confirmed Address in order to pay you.

z No: All payments are accepted. To maximize your sales, select No.

z Ask Me: You can choose whether to accept or deny payment without a Confirmed Address

on a case-by-case basis. This option allows you the flexibility to decide whether you want

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Blocking Certain Kinds of Payment

to take on the risk of not having the buyer’s Confirmed Address for each transaction. If you accept the payment, it becomes a completed transaction. If you deny a particular payment, the sender of the payment is notified that the payment has been denied and is credited with the payment amount. PayPal does not charge fees for denied payments.

Blocking Payments in a Currency You Do Not Hold

When you receive a payment in a currency you do not hold, PayPal prompts you to open a balance for that currency, convert it to your primary balance, or deny the payment. Payments in currencies for which you hold a balance are applied to the appropriate balance. You see a summary of each currency balance in your Account Overview page. For more information about managing your currency balances, see “PayPal-Supported Currencies” on page 56.”

There are three choices for this preference:

z Yes: Accept the payment regardless of the currency in which the payment is made.

z No, accept them and convert them to U.S. Dollars: Accept the payment but

automatically converts to U.S. Dollars.

z Ask Me: Transaction-by-transaction, you can choose to accept or deny a payment in a

currency you do not currently hold. If you accept the payment, it becomes a completed transaction. If you deny a particular payment, the sender of the payment is notified that the payment has been denied and is credited with the payment amount. PayPal does not charge fees for denied payments.

Blocking Payments From Users With Non-U.S. PayPal Accounts

Because many international addresses cannot be confirmed, you may choose to block payments from users with non-U.S. PayPal accounts in order to qualify for the Seller Protection Policy.

Blocking Payments From the Pay Anyone Subtab

You can choose whether or not to receive payments initiated via the Pay Anyone subtab of the Send Money tab on the PayPal website. Selecting this option might help you manage your

account, because the payments you receive will be associated with a specific item or transaction that you defined.

If you block these payments, you accept only payments initiated from Buy Now buttons, Donations, Shopping Cart, Subscriptions and Recurring Payments, Winning Buyer Notification, Mass Payments, Money Requests, Smart Logos, or eBay Checkout Payments.

Blocking Payments Funded By Credit Cards When Sender Has a Bank Account

You can force customers to pay you with a bank account or PayPal funds if they are able to do so. However, if they cannot pay you using a bank account or PayPal funds, they still have the option to pay with a credit card.

This preference can also help to reduce your risk of chargebacks. Verified users are users who have confirmed their bank accounts with PayPal or have been otherwise verified by PayPal. Because most Verified members have the option of paying with their bank accounts (via eCheck or Instant Transfer), this preference does not prevent users from sending you money. When they pay with PayPal’s Instant Transfer, you receive the payment instantly, just as when

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Adding Your Credit Card Statement Name

they pay with a credit card. Users who have not confirmed their bank accounts with PayPal can still send you money funded by credit cards.

Blocking Payments Funded By eChecks

You can block eCheck payments. Because eCheck payments take three to four business days to clear, you might want to block them for your Instant Purchase and Buy Now buttons.

If you choose to block these payments, users who attempt to pay via eCheck are prompted to add a credit card to their account before completing the transaction.

If you choose not to block these payments, you can receive eCheck payments through PayPal Website Payments or Auction Logos. eCheck payments are listed as Pending and are not credited to your PayPal account for three to four business days.

Adding Your Credit Card Statement Name

On the Payment Receiving Preferences page, you can specify the name that appears on your customers’ credit card statements.

FIGURE 2.9 Adding a Credit Card Statement Name

When a buyer pays you by credit card, your credit card statement name appears with the word PAYPAL* next to the charge on the statement (for example, PAYPAL*MYCCNAME). The Credit Card Statement Name can be up to 11 characters long, including spaces, but must not contain special characters (such as &, #, or _). The name is converted to all capital letters and might be truncated by some credit card processors.

The Credit Card Statement Name should accurately reflect your business or legal name.

Getting Customer Contact Telephone Numbers

“Customer Contact Information Telephone” is an option that gives you a contact telephone number for your customer. When you activate this option, customers are prompted to include a contact telephone number with their payment information.

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Language Encoding Your Data

IMPORTANT:In accordance with PayPal’s User Agreement, you may use this Contact

Telephone Number only to communicate with the buyer about the related purchase. You may not use this number for unsolicited commercial messages.

You can make the contact telephone number optional or required, or you can turn it off. “Off” is the recommended default option because customers value their privacy and prefer to minimize unsolicited communications.

When you require the buyer’s contact telephone number, your buyer sees the prompt during purchase.

FIGURE 2.10 Prompt for Customer Contact Telephone Number

Activating Customer Contact Telephone

Follow these steps to activate the Customer Contact Information Telephone option:

1. Log in to your PayPal account at

2. Click the My Account tab.

3. Click the Profile link.

4. Click the Website Payment Preferences link.

5. Select the option you prefer: On (Optional Field), On (Required Field), or Off (Recommended).

6. Complete the rest of the selections on the page.

7. Click Save.

Language Encoding Your Data

Websites that use PayPal in different parts of the world work with different languages. Human languages are represented in computing by the terms “character set” and “character encoding”.

https://www.paypal.com.

https://www.paypal.com/cn.

A character set is a computer representation of all the individual possible letterforms or word symbols of a language. For instance, ASCII (or American Standard Code for Information Interchange) is a common character set that has been used for decades to represent the

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Language Encoding Your Data

letterforms, numbers, punctuation, and symbols of American English. Another example of a character set is Big 5, which is one of the most widely implemented Chinese character sets. Character encoding, on the other hand, refers to how a particular character set is represented internally in data processing; that is, how the individual characters are actually stored and operated on. There many different kinds of character encodings. For example, an encoding might allow 7, 8, or 16 computer bits for a single character.

PayPal refers to these two terms together as language encoding.

Changing Your Language Encoding

With your Language Encoding preferences, you can precisely control the encoding of the data that PayPal should expect from your website’s use of any PayPal Website Payment button, and the encoding of the data that your website expects to receive back from PayPal

When you sign up for a new business account with PayPal, the PayPal system determines your character set and its encoding based on your country of origin, as specified by you during signup. For example, if your postal address indicates France, by default your Selling Preferences language encoding is set to a Western language character set.

Navigating Your Profile: Language Encoding

To set the default language encoding for your PayPal Business account, log in to your account and click the Profile tab. In the Selling Preferences column, click Language Encoding.

FIGURE 2.11 Profile Selling Preferences for Language Encoding

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Language Encoding Your Data

Changing Your Website Language

The Language Encoding page displays the setting for your website’s language, as shown in the following illustration. With the Your website’s language drop-down menu, you change the setting.

FIGURE 2.12 Language Encoding Settings: Basic Choices

To change the language of data PayPal should expect from your website, click the Your website’s language drop-down menu and select a different language, as shown in Figure 2.13,

“Website Language Preference.”

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FIGURE 2.13 Website Language Preference

Language Encoding Your Data

Click Save to save your selection or Cancel to leave the setting unchanged.

More Encoding Options

If you want to specify the exact standard name of your website’s character encoding, click More Options on the Language Encoding page to open the More Encoding Options page shown in Figure 2.14, “More Language Encoding Options.”

The More Encoding Options page allows you to specify the character encoding PayPal should expect from your website and the encoding of data PayPal sends to your website.

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Language Encoding Your Data

FIGURE 2.14 More Language Encoding Options

The encoding selection in the Encoding drop-down menu is based on the country of origin you specified at signup.

To change the encoding selection, click the Encoding drop-down menu and select one of the available encodings. For a complete list of supported encodings, see “Table 7.2, “Character

Sets and Encodings Supported by PayPal” on page 93.

For data that PayPal sends to you, you have the option to specify the same or a different encoding. To use the same encoding as your website, click the Yes radio button. To use a different encoding, click the No, use radio button and select the desired encoding from the associated drop-down menu.

Setting Language Encoding On Individual Transactions

You can set the language encoding on each individual transaction with the charset variable. See “Setting the Character Set: charset” on page 93.

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Using Your Merchant Account Profile and Tools

Multi-User Access to Your PayPal Account

With Multi-User Access, you can set up multiple logins with different permissions for business functions in your PayPal account, so employees have access only to the parts of your account they need to do their work. For example, you can give your customer service representatives their own login with limited permissions, so that they have the ability only to view balances and make refunds but not the ability to edit profiles, send money, or withdraw funds.

You can add up to seven separate logins to your account. You might want to establish a separate username and password for each employee, and grant each user the minimum access necessary. If an employee forgets or loses a password, you can log in and reset it.

NOTE: Remember to revoke the privileges of any employee that leaves your company.

To set up Multi-User Access:

1. Log in to your PayPal Business account.

2. Go to your Profile

3. Click Multi-User Access.

FIGURE 2.15 Multi-User Access Link in Account Profile Summary

4. Specify your Administrative Contact email address, which is the email address that receives notifications about your account activity.

NOTE: You must confirm this email address before you can proceed.

5. For each login, specify a User ID, password, and which account privileges the user has permission to use.

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Using Your Merchant Account Profile and Tools

PayPal-Supported Currencies

FIGURE 2.16 Multi-User Access: Adding a User

PayPal-Supported Currencies

The following currencies are supported by PayPal.

TABLE 2.2 PayPal-Supported Currencies, Currency Codes, and Maximum

Transaction Amounts

Maximum Transaction

Code Currency

AUD Australian Dollar 12,500 AUD

CAD Canadian Dollar 12,500 CAD

EUR Euro 8,000 EUR

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Amount

Using Your Merchant Account Profile and Tools

ABLE 2.2 PayPal-Supported Currencies, Currency Codes, and Maximum

Transaction Amounts

Maximum Transaction

Code Currency

GBP Pound Sterling 5,500 GBP

JPY Japanese Yen 1,000,000 JPY

USD U.S. Dollar 10,000 USD

Amount

Accepting or Denying Cross-Currency Payments

You choose which currencies you accept and how you would like to accept them. You can set your Payment Receiving Preferences to handle cross-currency payments. See “Blocking

Certain Kinds of Payment” on page 47.

When a customer sends a payment in a currency you hold, the funds appear in your account in the balance of that currency. When a customer sends a payment in a currency you do not hold, you can accept or deny the payment.

FIGURE 2.17 Accepting or Denying a Cross-Currency Payment

Receiving fees are assessed in the currency in which the funds were sent. Payments converted to your primary currency are converted at a competitive exchange rate.

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Using Your Merchant Account Profile and Tools

Issuing Refunds

Managing Currency Balances

Use the Currency Balances section of your Profile to manage your currency balances:

z Select your primary currency

z Open or close a currency balance

z Transfer funds between currency balances. Funds transferred from one currency balance to

another are exchanged at a competitive rate.

Issuing Refunds

When you issue a refund, the gross amount of the refund is sent to your customer. The gross amount equals the net amount of the original transaction plus the refunded fee from PayPal.

Gross Amount = Net Amount + Refunded Fee

Refunding Within 60 Days of Payment

You can refund the entire amount of a transaction or portions of it. If you issue a refund within 60 days, the original transaction fee for receiving the payment is credited to your account. For partial refunds, you are credited a percentage of the original transaction fee based on the refunded amount.

To issue a refund within 60 days:

1. Log in to your PayPal account.

2. Click the History subtab.

3. Find the payment transaction you want to refund.

4. Click the Details link for the transaction.

5. Click the Refund Payment link on the Transaction Details page.

6. Enter the refund amount and click Submit.

7. Confirm the refund amount and click Process Refund.

If you refund a pending eCheck payment, no fees are charged because the pending payment is effectively canceled.

Refunding After 60 Days

When you issue a refund after 60 days, your original transaction fee for receiving the payment is not credited to your account.

To issue a refund after 60 days:

1. Log in to your PayPal account.

2. Click the Send Money tab.

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Issuing Refunds

3. Enter the required information.

4. Click Continue.

5. Review the information on the confirmation page, and click Send Money to complete the

refund.

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Using Your Merchant Account Profile and Tools

Issuing Refunds

60 November 2005 Website Payments Standard Checkout Integration Guide

Single-Item Payment: Buy Now and Donations

Buy Now or Donations buttons are suitable for single-item payments or purchases. A single Buy Now button can sell one or more copies of the same item. However, to sell different items you must create separate Buy Now Buttons for each or use PayPal’s Shopping Cart. You can use to a Donations button to collect a pre-determined amount, or you can allow your donors to choose the amounts of their donations. “Example of the Basic Page Sequence” on page 16 shows how Buy Now or Donations work.

You can create a Buy Now or Donation button in two ways:

1. Use PayPal’s online Buy Now or Donation button factory to create an HTML FORM you copy to your website or to an email message.

2. Using the webpage tools of your own choice, construct your own HTML FORM based on the example in “Sample Buy Now Button HTML and Hyperlink” on page 65 and the descriptions of variables in Appendix A, “Website Payments Standard HTML Variables.”

Using Buy Now or Donations Button Factory

The button factories for Buy Now and Donations work in exactly the same way, except they prompt for slightly different information. These differences are noted in the following steps.

To create HTML with the Buy Now or Donations button factory:

1. Log in to your PayPal account at

2. Click the Merchant Tools tab.

3. Click Buy Now Buttons or Donations.

4. Enter the details of your item. All fields are optional.

Buy Now Button Fields

– Item Name/Service: Enter the name of the item or service you wish to sell. If you do not

enter anything in this field, your customers can complete it at time of purchase. PayPal recommends entering an item name to make it easier for you to ship the order.

– Item ID/Number: If you have an ID or tracking number for your item, enter it here. This

field is not be displayed to your customers at the time of payment, but they see it in their transaction details on the PayPal website.

– Item Price: Enter the price of the item you wish to sell. If you do not enter anything in

this field, your customers can complete it. PayPal recommends entering an Item Price to make it easier for you to collect the correct amount.

https://www.paypal.com.

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Single-Item Payment: Buy Now and Donations

Using Buy Now or Donations Button Factory

Donations Button Fields

– Donation Name/Service: Enter the reason for payment or the name of your

organization/charity here. If you do not enter anything in this field, your donors can complete this field.

– Donation ID/Number: You can use this field to differentiate payments (e.g. to enter a

campaign name). This field is not displayed to your donors at the time of payment, but they see it in their transaction details on the PayPal website.

– Donation Amount: If you would like to collect a pre-determined amount, you can enter

it in the Donation Amount field. If you would like your donors to choose their donation amounts, do not enter a price in this field. Users are prompted to enter a donation amount when they make payment.

Common Fields

– Currency: Choose the currency in which you would like this payment to be

denominated. This field defaults to the currency of your primary balance.

– Buyer’s Country: To display the PayPal login or sign-up page in a certain language,

select a country where that language is spoken from the pull-down menu.

5. Choose a image for your button.

If you are going to receive payments or donations from your website, choose the image for the button you would like your customers to click to make their purchase. To display your own image, enter the URL of the image’s location in the URL field.

NOTE: PayPal recommends that you enter an image URL only if the image is stored on a

secure (https) server. Otherwise, your customer’s web browser displays a message that the payment page contains insecure items.

If you are creating an email link, go to “Adding More Details to the Button” on page 63.

6. Security Settings

PayPal offers the option to encrypt your button’s HTML code. Encryption ensures that an item’s price and other details cannot be altered by a third party, thus increasing the security of your transactions. Select Yes to encrypt your code, or No to leave it editable.

PayPal highly recommends encrypting your button code. However, there are three limitations:

– Encrypted button HTML is not editable. If you want to modify your button code

manually, select No for this option.

– You cannot encrypt your button if it has dynamically-generated code from the Add

More Options page, such as drop-down Options fields (see step 5). If you need Option fields for your products, select No to turn encryption off.

– If you choose to encrypt your button, you cannot create an email link.

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Adding More Details to the Button

If you do not have additional details to add to your button (such as sales tax, shipping, or your logo), click Create Button Now and go to “Copy and Paste the HTML Code” on page 64. Otherwise, click Add More Options.

If you have additional details for your button, follow these steps:

1. For Buy Now buttons, Add Shipping and Sales Tax

– Shipping Cost Calculation: If you have specified shipping rates in your Profile, they

are listed here.

– Sales or Value Added Tax Calculation: If you have specified your tax rate in your

Profile, it is listed here. For more information, see “Automatic Calculation of Shipping

and Handling Cost and Tax” on page 45.”

2. For Buy Now buttons, add Option fields to your button

Creating an option field allows your customers to specify information about their purchases. You can use Option fields to specify options like color, size, or gift-wrapping. These options must not change the price of an item but let you collect additional information from your customer without extra email communication. Each Buy Now Button can have up to two option fields, and you can use a drop-down menu or text box to collect the information.

Single-Item Payment: Buy Now and Donations

Using Buy Now or Donations Button Factory

Unfortunately, Option fields and button encryption cannot be used if you are creating an email hyperlink. If you would still like to include Buy Now links in email messages, you can try either sending HTML emails, providing a link to the Buy Now Button (with Option fields) on your website, or asking your user to include the optional information in the Note field.

– Option Field Type: Choose the type of option field: drop-down menu or text box. If you

choose drop-down menu, you must enter the menu choices. If you choose text box, your customers enter their choice.

– Option Name: Enter the name of your option. The Option Name field has T a 60-

character limit.

– Drop-Down Menu Choices: If you are using a drop-down menu, you must enter your

menu choices. There is a 30-character limit per choice, with a maximum of 10 choices. Use a carriage return (press ENTER) to separate each choice.

3. Customize your payment pages

– Custom Payment Page Style: Give your customers a seamless payment experience by

customizing PayPal’s payment pages to match your website’s style. If you already added Custom Payment Page Styles in your Profile, they are listed here. Choose the page style you would like to appear when your customer clicks your Buy Now button. To learn more about creating page styles, see “Branding PayPal’s Payment Pages” on page 29.”

4. Customize your customer’s experience

– Successful Payment URL: Enter the URL for the page you want your customers

redirected to after they have completed their payments. Unless you have enabled Auto Return, your customers see a payment completion page where they click Continue and

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Single-Item Payment: Buy Now and Donations

Using Buy Now or Donations Button Factory

return to the Successful Payment URL you have specified. If you do not enter a Successful Payment URL, customers clicking this link are taken to a PayPal webpage.

– Cancel Payment URL: Enter the URL where you want to send your customers if they

cancel their payments at any point in the Buy Now payment flow. If you do not enter a Cancel Payment URL, customers who click this link are taken to a PayPal webpage.

5. Miscellaneous Options

– Quantity: If you want your customers to purchase more than one item or service, choose

Yes to prompt them to enter the quantity they want. If you choose No, the quantity is set to 1, and your customers can purchase only one item per payment.

– Shipping Address: If you want to prompt customers for a shipping address, choose Yes.

If you choose No, your customers are not asked to provide a shipping address.

6. Collect additional information from your customers

– Note: Select Yes if you want your customers to be able to include a note to you with their

payment. If you select No, your customers cannot include a note.

– Note Title: If you allow your customers to include a note with their payments, you can

specify a title for the note field. By specifying a title, you can prompt your buyers to enter specific information, such as a User ID or special instructions. There is a 40-character limit on your note field title. If you do not enter a title, your customers see Special

Instructions (optional) as the note field title.

7. Choose an email address to receive payment

If you have more than one confirmed email address, you can specify the address where you want to receive your email payment notifications when your customers pay you.

Copy and Paste the HTML Code

When you completed the Buy Now Button Factory form, click Create Button Now.

If your customers pay on your website:

1. Copy the code from the HTML for Websites text box by highlighting all the text and

pressing Ctrl+C, or by highlighting all the text, right-clicking your mouse, and selecting

Copy.

2. Open the webpage where you want to collect payment.

3. Paste the code you just copied into your webpage file wherever you would like the image to

appear, typically next to the description of the item or service, either by pressing Ctrl+V or by right-clicking your mouse and selecting Paste.

If your customers pay by email:

NOTE: If you use Encrypted Website Payments (EWP), you cannot create an email link.

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Single-Item Payment: Buy Now and Donations

Sample Buy Now Button HTML and Hyperlink

1. Copy the code from the Link for Emails text box by highlighting all of the text and pressing Ctrl+C, or by highlighting all of the text, right-clicking your mouse, and choosing

Copy.

2. Open the email you want to send.

3. Paste the code you just copied into your email either by pressing Ctrl+V or by right- clicking on your mouse and selecting the Paste option.

4. When your customers receive the email, the code appears as a link. Clicking the link takes

them to your PayPal payments page.

HTML Tip: Ensure that the HTML code on your webpage exactly matches the code you copy from PayPal. Some HTML editors might change some characters in the code. In addition, be sure you paste the code into a field that accepts HTML. If you paste the code into a standard text field, the code is treated as displayable text.

Sample Buy Now Button HTML and Hyperlink

The HTML for a Buy Now Button looks similar to the following. Several optional fields are shown.

EXAMPLE 3.1 HTML for Buy Now Button

IMPORTANT:You can change the values for any of the variables, with the exception of the

first two lines.

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Single-Item Payment: Buy Now and Donations

Sample Buy Now Button HTML and Hyperlink

<tr>

<td>

<input type=”hidden” name=”on0” value=”Color?”>Color? <select name=”os0”>

<option value=”Red”>Red <option value=”Green”>Green <option value=”Blue”>Blue</select>

</td>

</tr> </table> <input type=”image” src=”http://images.paypal.com/images/x-click-but01.gif” name=”submit” alt=”Make payments with PayPal - it’s fast, free and secure!”> </form>

The HTML shown above generates the following hyperlink. This example includes several optional fields, and the text is URL-encoded.

https://www.paypal.com/xclick/business=seller@designerfotos.com&undefined_quantity=1& item_name=Baseball+Hat&item_number=123&amount=5.95&no_shipping=1&return=http%3A//www. designerfotos.com/thankyou.htm&cancel_return=http%3A//www.designerfotos.com/cancel.ht m¤cy_code=USD

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Multiple-Item Payment: Shopping Cart

With PayPal’s Shopping Cart, your customers can buy multiple items with a single payment, browse your entire selection, and view a consolidated list of all their items before purchasing.

The shopping cart comes in two basic forms:

1. A shopping cart hosted on the PayPal website,

2. HTML input variables for use in third-party shopping carts.

The key distinction between the PayPal-hosted shopping cart and a third-party shopping cart is in the following HTML variables:

z add or display: these variables indicate the PayPal-hosted shopping cart.

z upload: this variable indicates that a third-party shopping cart is in use.

https://www.paypal.com/.

How the PayPal-Hosted Shopping Cart Works

This example shows how the shopping carted hosted by PayPal can work with the following features:

z Account Optional is turned off. In this example, to pay with PayPal, the customer must

already have a PayPal account. For more information, see “Account Optional or Website

Payments Express” on page 35.”

z Auto Return is turned on. At the end of the transaction, the customer’s browser is

automatically redirected back to your website. For more information, see “Auto Return” on

page 43.”

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Multiple-Item Payment: Shopping Cart

How the PayPal-Hosted Shopping Cart Works

What The Customer Sees

Bob, who has a PayPal account, is buying from The Stuff Shop. He selects a baseball hat by clicking Add to Cart.

FIGURE 4.1 PayPal-Hosted Shopping Cart Example: Add to Cart

The Stuff Shop is using a generic Add to Cart button created with the PayPal shopping cart button factory described in “Button Factory for PayPal-Hosted Shopping Cart” on page 72. The HTML code for this button is detailed in “Sample HTML for PayPal-Hosted Shopping

Cart ” on page 75.

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Multiple-Item Payment: Shopping Cart

How the PayPal-Hosted Shopping Cart Works

Bob’s browser is redirected to the PayPal website enters his PayPal username and password, and clicks Log In.

FIGURE 4.2 PayPal-Hosted Shopping Cart Example: Logging In to PayPal during

Checkout

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Multiple-Item Payment: Shopping Cart

How the PayPal-Hosted Shopping Cart Works

Bob is taken to a confirmation page showing the details of his payment.

FIGURE 4.3 PayPal-Hosted Shopping Cart Example: Confirmation Page

Because The Stuff Shop has not activated Profile-based shipping preferences, no shipping costs are added to the order. For information about automatic shipping calculation, see

“Automatic Calculation of Shipping and Handling Cost and Tax” on page 45.

Bob clicks Pay to complete the payment.

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How the PayPal-Hosted Shopping Cart Works

Bob’s browser is returned to The Stuff Shop website, which displays a “Thank you” page.

FIGURE 4.4 PayPal-Hosted Shopping Cart Example: Thank You Page After Payment

Bob receives an email receipt for this transaction that confirms the payment and payment details.

FIGURE 4.5 PayPal-Hosted Shopping Cart Example: Email Transaction Receipt

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Multiple-Item Payment: Shopping Cart

Button Factory for PayPal-Hosted Shopping Cart

With the PayPal-hosted shopping cart, customers can make a single payment for multiple items. With our shopping cart button factory, you can create a separate Add to Cart button for each item and put the automatically generated HTML code for that button on your website next to the item.

Use the following steps to create a shopping cart button, or if you are familiar HTML, you can use the variables in Appendix A to code your own buttons.

1. Log in to your PayPal account at

2. Enter the following URL:

https://www.paypal.com/us/cgi-bin/webscr?cmd=_cart-factory

3. Enter the details for the item.

– Item Name/Service (required): Enter the name of the item or service you wish to sell – Item ID/Number: If you have an ID or tracking number for your item, enter it here. This

field will be displayed to your customers at the time of payment, and will be shown in

both the buyer’s and seller’s transaction details on the PayPal website – Item Price (required): Enter the price of the item you wish to sell – Currency (required): Choose the currency in which you would like this payment to be

denominated. This field defaults to the currency of your primary balance. – Buyer’s Country: If you want the PayPal login or sign-up page to be displayed in a

certain language, select a country from the pull-down menu where that language is

spoken.

4. Choose an image for your button.

If you are going to be receiving payments from your website, choose the image for the button you would like your customers to click to make their purchase. To display your own image, enter the URL of the image’s location in the URL field.

https://www.paypal.com.

NOTE: All items added to a PayPal shopping cart must be denominated in a single currency,

which is determined by the currency specified for the first item added to the Cart or by the currency_code variable. Once a buyer adds one item to a cart, the buyer is not allowed to add any items listed in other currencies to that cart. To change the currency, customers must purchase the items in the first currency or remove all items from the cart and add the items of the second currency. The best option is to list all of your items in the same currency.

Adding More Details to the Button

If you do not have additional details to add to your button (such as sales tax, shipping, or your logo), click Create Button Now and go to “Copy and Paste the Shopping Cart HTML” on

page 74. Otherwise, click Add More Options.

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Button Factory for PayPal-Hosted Shopping Cart

1. Calculate shipping and tax.

If you have specified shipping rates or tax calculations in your Profile, they are listed under Shipping Cost Calculation and Sales Tax Calculation. For more information, see

“Automatic Calculation of Shipping and Handling Cost and Tax” on page 45.”

2. Add option fields to your button.

Creating an option field lets your customers specify information about their purchases. Option fields can specify information such as color, size, or gift wrapping. Options must not change the price of an item. A shopping cart button can have up to two option fields, and you can use a drop-down menu or a text box to collect the information.

– Option Field Type: Choose the type of option field: drop-down menu or text box. If you

choose drop-down menu, you will enter the different choices. If you choose text box,

your customer will enter his choice. – Option Name: Enter the name of your option. There is a 60-character limit on option

names. – Drop-Down Menu Choices: If you are using a drop-down menu, enter your menu

choices. There is a 30-character limit per choice, with a maximum of 10 choices. Use a

carriage return (press Enter) to separate each choice.

3. Select a View Cart button.

Choose the button image you would like your customers to click when they check out and complete their purchases. To display your own image, enter the URL of the image’s location in the URL field.

4. Customize your payment pages.

– Custom Payment Page Style: Give your customers a seamless payment experience by

customizing PayPal's payment pages to match the style of your website. If you have

already added Custom Payment Page Styles in your Profile, they will be listed here.

Choose the page style you would like to appear when your customer clicks your

Shopping Cart button. For more information about adding, selecting, or changing custom

page styles, see “Branding PayPal’s Payment Pages” on page 29.”

5. Customize your customer’s experience.

– Successful Payment URL: Enter the URL where you would like to send your customers

after they have completed payment. Once customer has completes the payment, he sees

a payment confirmation page. From this page, he will click Continue and return to the

Successful Payment URL you have specified. If you do not enter a Successful Payment

URL, customers who click this link will be taken to a PayPal web page. – Cancel Payment URL: Enter the URL where you would like to send your customers if

they cancel their payment at any point in the PayPal Shopping Cart payment flow. If you

do not enter a Cancel Payment URL, customers who click this link will be taken to a

PayPal web page.

6. Select other options.

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Multiple-Item Payment: Shopping Cart

Button Factory for PayPal-Hosted Shopping Cart

– Shipping Address: If you would like your customers to be prompted to provide a

shipping address, choose Yes. If you choose No, your customers will not be asked to

provide a shipping address.

7. Collect additional information from your customers.

– Note: Select Yes if you would like your customers to be able to include a note to you

with their payments. If you select No, your customers will not be given the opportunity

to include a note. – Note Title: You can choose a title for the note field. By including a title, you can prompt

your buyers to enter specific information (like a User ID) or special instructions. If you

do not enter a title, your customers will see the note field title Optional Instructions.

8. Choose the email address at which you want to receive payment.

If you have more than one confirmed email address attached to your PayPal account, you can specify the address at which you would like to receive your email payment notifications when your customers pay you.

Copy and Paste the Shopping Cart HTML

When you have finished filling out the PayPal Shopping Cart Button Factory form, click Continue.

z Copy the code from the HTML for Websites text box by highlighting all of the text and

pressing Ctrl+C, or by highlighting all of the text, right-clicking your mouse, and choosing Copy.

z Open the web page file into which you’d like to add your Shopping Cart Button.

z Paste the code you just copied into your web page file wherever you would like the button

to appear (typically, next to the description of the item or service) by either pressing

Ctrl+V or by right-clicking on your mouse and selecting Paste.

HTML Tip: Ensure that the HTML code on your web page exactly matches the code you

copy from PayPal. Some HTML editors might change some characters in the code. In addition, be sure that you paste the code into a field that accepts HTML. If you paste the code into a standard text field, the code is treated as displayable text.

Create Add to Cart buttons for all items.

Click Create Another Button to create more Add to Cart buttons the previous steps.

Copy the View Cart button HTML code.

Now that you have placed your Add to Cart buttons on your website, you need to include the “View Cart” buttons so your customers can quickly proceed to checkout when they are ready.

– Copy the code from the Copy ‘View Cart’ button HTML box by highlighting all of the

text and pressing Ctrl+C, or by highlighting all of the text, right-clicking on your mouse,

and choosing Copy. – Open each web page from which you would like your customers to be able to get to their

PayPal Shopping Carts.

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Sample HTML for PayPal-Hosted Shopping Cart

– Paste the code you just copied into your web page file where you would like your “View

Cart” button to appear, by either pressing Ctrl+V or by right-clicking your mouse and

choosing Paste.

Sample HTML for PayPal-Hosted Shopping Cart

The following HTML is of a generic Add to Cart button created with the PayPal Shopping Cart button factory. Several optional fields are shown.

EXAMPLE 4.1 HTML for PayPal-Hosted Shopping Cart “Add to Cart” Button

IMPORTANT:You can change the values for any of the variables, with the exception of the

first two lines.

<tr> <td>  <input type="hidden" name="on0" value="Color?">Color? <select name="os0">

<option value="Red">Red <option value="Green">Green

</table> <input type="image" src="https://www.paypal.com/images/x-click-but22.gif" border="0" name="submit" alt="Make payments with PayPal - it’s fast, free and secure!"> </form>

Rather than creating a separate button for every single item you want to sell with the PayPalhosted shopping cart, you can edit the HTML to create different Add to Cart buttons.

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Multiple-Item Payment: Shopping Cart

How A Third-Party Shopping Cart Works

This example shows how PayPal can work with a third-party shopping cart and with the following features:

z Account Optional is turned off. In this example, to pay with PayPal, the customer must

already have a PayPal account. For more information, see “Account Optional or Website

Payments Express” on page 35.”

z Auto Return is enabled. At the end of the transaction, the customer’s browser is

automatically redirected back to the merchant website. For more information, see “Auto

Return” on page 43.

What The Customer Sees

Bob, who has a PayPal account, is buying photos from DesignerFotos. He selects several photos by clicking Add to Cart.

FIGURE 4.6 Third-party Shopping Cart Example: Add to Cart

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Multiple-Item Payment: Shopping Cart

How A Third-Party Shopping Cart Works

In this example integration, the contents of the shopping cart are displayed each time an item is added to the cart.

FIGURE 4.7 Third-Party Shopping Cart Example: Proceed to Checkout

After selecting all the items he wants, Bob clicks Proceed to Checkout.

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Multiple-Item Payment: Shopping Cart

How A Third-Party Shopping Cart Works

Bob’s browser is redirected to the PayPal website, where he enters his PayPal username and password and clicks Continue to login.

FIGURE 4.8 Third-Party Shopping Cart Example: Logging In to PayPal during

Checkout

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How A Third-Party Shopping Cart Works

Bob is taken to a confirmation page showing the details of his payment.

FIGURE 4.9 Third-Party Shopping Cart Example: Confirmation Page

Because DesignerFotos has activated Profile-based shipping preferences, the shipping costs are automatically added to the order. For information about automatic shipping calculation, see “Automatic Calculation of Shipping and Handling Cost and Tax” on page 45.

Bob clicks Pay to complete the payment.

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Multiple-Item Payment: Shopping Cart

How A Third-Party Shopping Cart Works

Bob’s browser is returned to the merchant’s website, which displays a “Thank you” page.

FIGURE 4.10 Shopping Cart Example: Thank You Page After Payment

Bob receives an email receipt for this transaction that confirms the payment and includes a copy of the payment details.

FIGURE 4.11 Example: Email Transaction Receipt

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What You See

DesignerFotos receivers an receives an email notification of Bob’s payment.

FIGURE 4.12 Example: Seller’s Email Receipt

Multiple-Item Payment: Shopping Cart

How A Third-Party Shopping Cart Works

DesignerFotos (the user seller@designerfotos.com) can also see the payment in the PayPal account history.

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Multiple-Item Payment: Shopping Cart

Adding PayPal to Your Third-party Shopping Cart

Instead of relying on the PayPal-hosted Shopping Cart, some web developers want to integrate PayPal payment processing with their own third-party shopping cart. The details in this section allow your buyers to pay with PayPal when they are ready to check out after adding all of their items to your third-party shopping cart.

Required Third-Party Shopping Cart Variables

Your FORM requires at least the following hidden variables. For complete list of variables, see

Appendix A, “Website Payments Standard HTML Variables.”

TABLE 4.1 Required Third-Party Shopping Cart Variables

Name Description

amount_1 Price of a single item or the total price of all items in the

shopping cart

business Email address of your PayPal account

item_name_1 Name of the item or a name for the entire shopping cart

upload Indicates the use of third-party shopping cart

There are two ways to integrate your third-party shopping cart with the PayPal payment flow:

1. Pass the details of the individual items.

2. Pass the aggregate amount of the total cart payment, rather than the individual item details.

Passing Individual Item Details to PayPal

If you can configure your third-party shopping cart to pass individual items to PayPal, the information about the items is included in the buyer’s and seller’s history transactions and notifications.

1. Set the cmd variable to

2. Include the upload variable:

3. Define item details for each item in the cart.

_cart.

Specify the required variables and any optional variables listed in Table A.6, “HTML

Variables: Individual Items in Third-Party Shopping Carts” on page 102. Append _

variable name, where

x is the item number, starting with 1 and increasing by one for each item

x to the

added to the cart. The first item in the cart must be defined with variables ending in _1, like item_name_1, amount_1, and quantity_1; the second item with variables like

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Adding PayPal to Your Third-party Shopping Cart

item_name_2, amount_2, and quantity_2; the third item with variables like item_name_3, amount_3, and quantity_3; and so on.

IMPORTANT:The _x values must increment by one continuously in order to be recognized.

If you skip from item #1 to item #3 without defining an item #2, the third item will be ignored.

The minimum required HTML for your post to PayPal looks similar to the following.

EXAMPLE 4.1 HTML for Passing Individual Item Detail to PayPal

</form>

Setting Currency in the Cart

All monetary variables (amount_x., shipping_x., shipping2_x, handling_x, tax_x., and tax_cart) are interpreted in the currency designated by the currency_code variable posted with the payment. Because currency_code is not item-specific, there is no need to append _

x to the currency_code variable name. If no currency_code variable is posted,

all monetary values default to U.S. Dollars.

Setting Tax on Individual Items

Use the tax_x variable to specify the tax for a particular item in the cart. For example, the following line specifies that the tax on item 2 in the cart is 15 cents:

Setting the Tax for the Entire Cart

Use the tax_cart variable to specify a tax amount that applies to the entire purchase, rather than to individual items. The tax_cart variable overrides any per-item tax amount specified with tax_x.

Passing the Aggregate Shopping Cart Amount to PayPal

You can aggregate your entire shopping cart and pass the total amount to PayPal. You must post a single item_name_1 for the entire cart and the total price of the cart’s contents in amount_1 as though it were a purchase of a single item.

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Multiple-Item Payment: Shopping Cart

Adding PayPal to Your Third-party Shopping Cart

NOTE: One drawback of this method is that your buyers will not see the individual items in

their carts. In addition, you cannot change our variable names, nor can you add your own variable names.

The following HTML is identical to “HTML for Passing Individual Item Detail to PayPal” on

page 83 except the individual items’ amounts and item names have been aggregated into a

single item and amount.

EXAMPLE 4.2 HTML for Aggregate Cart Detail to PayPal

</form>

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Encrypted Website Payments

To add security to online payments, you can create Encrypted Website Payment (EWP) button code that relies on standard public key encryption. With public and private keys, you can dynamically encrypt payment information before sending it to PayPal.

Encrypted Website Payments works in the following way.

TABLE 5.1 How Encrypted Website Payments Work

Merchant Customer PayPal

Creates HTML name/value pairs that represent the parameters of the HTML PayPal when a customer clicks a button on his website

Encrypts the button parameters with PayPal’s public key

Signs the encrypted data with his own private key

FORM to post to

Publishes the signed, encrypted website with a “Pay” button

Prerequisites to Using EWP

This section describes how to create your private and public keys for EWP, upload your public key to PayPal, and download a copy of PayPal’s public key:

z Generate a private key

z Generate a public certificate

z Upload your public certificate to the PayPal website at https://www.paypal.com/us/cgi-

bin/webscr?cmd=_profile-website-cert

z Download PayPal's public certificate from https://www.paypal.com/us/cgi-

bin/webscr?cmd=_profile-website-cert

FORM to his

Clicks “Pay” button, which posts the signed, encrypted

FORM data to PayPal’s URL

Checks the authenticity of the data by using the merchant’s uploaded public key

Decrypts the data with PayPal’s private key

Directs the buyer’s browser to the PayPal payment flow specified in the button parameters

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Encrypted Website Payments

Creating Your Public Certificate

Public Key Encryption Background

Public key encryption (asymmetric encryption) improves security and convenience by allowing senders and receivers to have separate public and private encryption keys:

z The public key: The public key is the portion of an asymmetric cryptographic key that

receivers give senders who want to send them encrypted information. I

z The private key: The private key is the portion of an asymmetric cryptographic key

receivers keep secret and do not send to anyone. The public certificate: The public certificate consists of the public key and identity information, such as a person's name, which could be signed by a certificate authority (CA). The CA guarantees that the public key belongs to the named entity.

z The encryption process: Sender use both their private key and the receivers’ public key to

encrypt the information. Receiver use their private key and the senders’ public key to decrypt the information that was encrypted. This encryption process is also used with digital signatures to verify the origin of the information.

Creating Your Public Certificate

For EWP, PayPal requires that you upload your public certificate to its website so that the authenticity of the encrypted code can be verified.

PayPal accepts only X.509 public certificates, not public keys. The difference between a key and a certificate is that a certificate includes the public key along with information about the key, such as when the key expires and who the key belongs to. PayPal accepts public certificates in OpenSSL PEM format from any established certificate authority, such as VeriSign.

You can also create your own private key and public certificate using open source software such as OpenSSL (

Creating Your Private Key Using OpenSSL

Using the openssl program, enter the following command to create your private key. The command generates a 1024-bit RSA private key that is stored in the file my-prvkey.pem:

openssl genrsa -out my-prvkey.pem 1024

Creating Your Public Certificate Using OpenSSL

The public certificate must be in PEM format. To create your certificate, enter the following openssl command, which generates a public certificate in the file my-pubcert.pem:

http://www.openssl.org), which is detailed in the following section.

openssl req -new -key my-prvkey.pem -x509 -days 365 -out my-pubcert.pem

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Uploading Your Public Certificate

To upload your public certificates to the PayPal website:

1. Log in to your Business or Premier PayPal account.

2. Click the Profile subtab.

3. In the Seller Preferences column, click Encrypted Payment Settings.

4. Click Add.

5. Click Browse, and select the public certificate you want to upload.

When your public certificate is successfully uploaded, it appears on the next screen under

Your Public Certificates.

FIGURE 5.1 Upload Public Certificate for EWP

Encrypted Website Payments

Uploading Your Public Certificate

After you successfully upload your certificate, PayPal assigns a corresponding certificate ID. Store the certificate ID in a safe place; you need it to make Encrypted Website Payments.

Downloading PayPal's Public Certificate

To download PayPal’s public certificate:

1. Log in to your Business or Premier PayPal account.

2. Click the Profile subtab.

3. In the Seller Preferences column, click Encrypted Payment Settings.

4. Under the PayPal Public Certificate section, click Download.

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Encrypted Website Payments

Removing Your Public Certificate

FIGURE 5.2 Download PayPal’s Public Certificate for EWP

Removing Your Public Certificate

NOTE: If you remove your public certificate, it’s associated certificate ID is no longer valid for

encrypting buttons, and any buttons generated by your website with that certificate ID will not function correctly.

To remove one or more of your public certificates:

1. Log in to your Business or Premier PayPal account.

2. Click the Profile subtab.

3. In the Seller Preferences column, click Encrypted Payment Settings.

4. Select one of the listed certificates, and click Remove.

5. On the next screen, click Remove again to remove the selected public certificate.

Blocking Unencrypted Website Payments

To prevent someone from creating a “spoof” version of your Website Payment buttons, you can block unencrypted website payments.

To allow only Encrypted Website Payments:

1. Log in to your Business or Premier PayPal account.

2. Click the Profile subtab.

3. Click the Website Payment Preferences link in the right-hand menu.

4. Select On next to Block Non-encrypted Website Payments.

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Testing in the PayPal Sandbox

The PayPal Sandbox can be used to test the following functionality.

IMPORTANT:The Sandbox does not process real money.

z Buy Now and Donations: Test single-item payments. For more information, see

Chapter 3, “Single-Item Payment: Buy Now and Donations.”

z Shopping Carts: Test the purchase of multiple items in a single transaction and making a

single payment. For more information, see Chapter 4, “Multiple-Item Payment: Shopping

Cart.”

z Subscriptions: Create and publish test/prototype webpages and other content to which

only paying members will have access. For more information, see the Subscriptions and

Recurring Payments Guide.

z Refunds: Test Aa providing a refund of money paid by a PayPal user in a transaction.

z Simulated transactions: Test scenarios such as successful and failed eChecks.

To test in the Sandbox, you must first create a Developer Central account. With this account, you can create multiple PayPal accounts, such as seller and buyer accounts, to simulate different scenarios.

For complete details about using Developer Central and the Sandbox, see the Sandbox User

Guide.

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Testing in the PayPal Sandbox

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Website Payments Standard

HTML FORM Basics

This chapter describes the basic functionality of Website Payments Standard HTML FORMs in technical terms.

Your customers interface with Website Payments Standard through hidden HTML FORM input variables on your website. These FORMs submit variables and their values to PayPal. You set these variables to produce the desired effect. Depending on the values of the variables, you can invoke PayPal’s shopping cart, Buy Now, or Donations and activate or invoke various PayPal features.

There is a wide variety of HTML creation tools for you to choose from. This guide does not describe all the possibilities. PayPal offers “button factories” that walk you through the process of creating HTML for Buy Now or Donations buttons and Shopping Cart buttons. For more information about these button factories, see Chapter 3 and Chapter 4.

FORM Attributes: ACTION and METHOD

The FORM tag includes two required attributes, ACTION and METHOD, and always looks like this:

IMPORTANT:Do not change these values.These attributes are required for any PayPal

Shopping Cart, Buy Now, or Donations button.

Hidden Input Variables

HTML input variables in a PayPal Website Payments Standard FORM are always hidden from the customer’s view. They have the following general format:

The variableName is any of the variables described in Appendix A, “Website Payments

Standard HTML Variables,” and the

variables.

allowedValue is any of the values detailed for those

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Specifying the Website Payments Standard Product: cmd

The cmd variable is always required in a FORM. Its value determines which Website Payments Standard product you are using to obtain payment from the customer:

TABLE 7.1 Allowed Values for cmd Variable

Value of cmd Description

_xclick A Buy Now or Donations button

_cart A shopping cart

The input tag looks like one of the following:

z Buy Now or Donations: <INPUT TYPE=”hidden” name=”cmd” value=”_xclick”>

z Shopping Cart: <INPUT TYPE=”hidden” name=”cmd” value=”_cart”>

IMPORTANT:These INPUT tags are required exactly as shown above. Do not alter them.

Variations on Basic Variables

This section highlights some useful miscellaneous ideas about Website Payments Standard FORM variables.

The HTML variables interact in various ways. Sometimes their effect is cumulative, sometimes they can cancel each other out, sometimes a variable requires that you also set another variable. These interactions are detailed in the descriptions of the variables in

Appendix A, “Website Payments Standard HTML Variables.”

Prompting for Quantity in Buy Now or Donations: undefined_quantity

With Buy Now and Donations, you can require the customer to specify the desired number of copies of the single item by using the undefined_quantity variable:

Recordkeeping with Passthrough Variables

Some variables are exclusively for your own use (such as for tracking orders) and are not recorded or used by PayPal. The values you send to PayPal are returned to you in an Instant Payment Notification (IPN) exactly as you set them. For this reason, they are called passthrough variables.

The following are passthrough variables:

z custom

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z item_number or item_number_x

z invoice

Setting the Character Set: charset

You can use the charset FORM variable to specify the character set or character encoding of the data you collect in your website forms and send to PayPal. PayPal sends data to you in the same character set or encoding you specify with the charset variable. For example, the following INPUT tag sets the encoding to UTF-8:

ABLE 7.2 Character Sets and Encodings Supported by PayPal

Variations on Basic Variables

Big5 (Traditional Chinese in Taiwan)

EUC-JP EUC-KR EUC-TW gb2312 (Simplified Chinese) gbk HZ-GB-2312

(Traditional Chinese in Hong Kong)

ibm-862 (Hebrew with European characters) ISO-2022-CN

ISO-2022-JP ISO-2022-KR ISO-8859-1

(Western European Languages) ISO-8859-2 ISO-8859-3 ISO-8859-4 ISO-8859-5 ISO-8859-6 ISO-8859-7

ISO-8859-8 ISO-8859-9 ISO-8859-13 ISO-8859-15 KOI8-R

(Cyrillic) Shift_JIS UTF-7 UTF-8 UTF-16

UTF-16BE UTF-16LE UTF16_Platform

Endian UTF16_Opposit eEndian UTF-32 UTF-32BE UTF-32LE UTF32_Platform

Endian UTF32_Opposit

eEndian

Setting Return URL on Individual Transactions

With Auto Return turned on in your Profile, you can set the value of the return URL on each individual transaction, overriding the value you have stored on PayPal. For example, you might want to return the customer’s browser to a URL on your site that is specific to that customer, perhaps with a session ID or other transaction-related data included in the URL.

To set the return URL for a transaction, include the return variable in the HTML FORM:

US-ASCII windows-1250 windows-1251 windows-1252 windows-1253 windows-1254 windows-1255 windows-1256 windows-1257

windows-1258 windows-874 (Thai) windows-949

(Korean) x-mac-greek x-mac-turkish x-maccentraleurroman x-mac-cyrillic ebcdic-cp-us ibm-1047

Desired Currency on Individual Transactions

Use the currency_code variable on individual transactions to specify the currency of the payment:

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Website Payments Standard HTML FORM Basics

Prepopulating FORMs

The value of currency_code must be a code from Table 2.2, “PayPal-Supported Currencies,

Currency Codes, and Maximum Transaction Amounts” on page 56.

NOTE: If currency_code is not included, the default currency is USD.

URL-Encoding Variable Values

Variables such as return, cancel_return, image_url require a URL as their values. You must ensure that these values are URL-encoded before you pass them to PayPal. URLencoding is the substitution of characters required in URLs with characters that will not be misinterpreted by web servers. For example, a colon character is replaced with the characters %3A.

Prepopulating FORMs

Account Optional (also called Website Payments Express) allows you to accept payments from customers without a PayPal account. However, checking out with PayPal is often faster than forcing the customer to reenter information that is already stored on PayPal. For repeat purchases, it is to your advantage to get your customers to create a PayPal account.

During a payment transaction, you can prepopulate a FORM by including HTML input variables specifically for this purpose. A complete description of these variables is in

Table A.7, “HTML Variables: Prepopulating PayPal FORMs or Address Overriding” on page 103.

IMPORTANT:The value of the cmd variable must be _ext-enter, and you must include

the redirect_cmd variable, the value of which must be _xclick.

Sample HTML for FORM Prepopulation

The following sample HTML shows the optional prepopulation fields with the required variables in payment buttons. The field entries must be dynamically generated by your website and included in the URL to which your customers are sent when they make a PayPal payment.

EXAMPLE 7.1 HTML for FORM Prepopulation

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Overriding PayPal-Stored Addresses

<input type=”hidden” name=”address2 ” value=”Apt 5”> <input type=”hidden” name=”city” value=”Berwyn”> <input type=”hidden” name=”state” value=”PA”> <input type=”hidden” name=”zip” value=”19312”> <input type=”hidden” name=”night_phone _a” value=”610”> <input type=”hidden” name=”night_phone _b” value=”555”> <input type=”hidden” name=”night_phone _c” value=”1234”> <input type=”image” SRC=”http://images.paypal.com/images/x-click-but01.gif”

border=”0” name=”submit” alt=”Make payments with PayPal - it’s fast, free and secure!”> </form>

Overriding PayPal-Stored Addresses

For customers who already have PayPal accounts and whom you already prompted for a shipping address before they choose to pay with PayPal, you can use the entered address instead of the address the customer has on file with PayPal. Set the address_override variable to 1, as in the following example:

You must also include FORM variables that contain the customer’s address information, as detailed in Table A.7, “HTML Variables: Prepopulating PayPal FORMs or Address

Overriding” on page 103.

The customer is shown the passed-in address but cannot edit it. No address is shown Iif the address is not valid, such as missing required fields, including country, or if the address is not included at all.

Sample HTML for Overriding PayPal-Stored Shipping Addresses

The following HTML shows the address_override variable in conjunction with the prepopulation variables for overriding a customer’s PayPal-stored shipping address.

EXAMPLE 7.2 HTML for Overriding PayPal-Stored Address

<input type="hidden" name="cmd" value="_xclick"> <input type="hidden" name="business" value="seller@designerfotos.com"> <input type="hidden" name="item_name" value="Memorex 256MB Memory Stick"> <input type="hidden" name="item_number" value="MEM32507725"> <input type="hidden" name="amount" value="3"> <input type="hidden" name="tax" value="1"> <input type="hidden" name="quantity" value="1"> <input type="hidden" name="no_note" value="1"> <input type="hidden" name="currency_code" value="USD"> <!-Override the customer’s stored PayPal address

-->

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Website Payments Standard HTML FORM Basics

Instant Payment Notification: notify_url

</form>

Instant Payment Notification: notify_url

Instant Payment Notification consists of three parts:

1. A customer pays you.

2. PayPal POSTs FORM variables to a URL you specify that runs a program to process the

variables.

3. You validate the notification.

FIGURE 7.1 How IPN Works: Three General Steps

1. A customer payment or a refund triggers IPN. This payment can be via Website Payments Standard FORMs or via the PayPal Web Services APIs for Express Checkout, MassPay, or

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Instant Payment Notification: notify_url

RefundTransaction. If the payment has a “Pending” status, you receive another IPN when the payment clears, fails, or is denied.

2. PayPal posts HTML FORM variables to a program at a URL you specify. You can specify this URL either in your Profile or with the notify_url variable on each transaction. This post is the heart of IPN. Included in the notification is the customer’s payment information (such as customer name, payment amount). All possible variables in IPN posts are detailed in the Order Management Integration Guide. When your server receives a notification, it must process the incoming data.

3. Your server must then validate the notification to ensure that it is legitimate. For details, see the Order Management Integration Guide.

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Website Payments Standard HTML FORM Basics

Instant Payment Notification: notify_url

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Website Payments Standard HTML

Variables

This appendix details all variables for Buy Now, Donations, Add to Cart buttons and shopping carts.

TABLE A.1 Allowed Values for cmd Variable

Value of cmd Description

_xclick A Buy Now or Donations button

_cart A shopping cart

_ext-enter For prepopulating PayPal account signup. Requires

redirect_cmd.

ABLE A.2 HTML Variables: IPN Control notify_url

Name Description

Required or Optional

Character Length

notify_url The URL to which PayPal posts information about the

transaction. Must be URL-encoded.

ABLE A.3 HTML Variables: Item Information

Name Description

amount The price or amount of the purchase, not including shipping,

handling, or tax. If omitted in Buy Now or Donations, customers can enter an amount at time of purchase.

z Optional for Buy Now or Donations z Required for Shopping Cart

item_name Description of item. If omitted in Buy Now or Donations,

customers can enter an item name at time of purchase.

z Optional for Buy Now or Donations z Required for Shopping Cart

item_number Passthrough variable for you to track purchases or donations,

passed back to you at payment completion. If omitted in Buy Now or Donations, no variable is passed back to you.

Optional 255

Required or Optional

See description.

Optional 127

Character Length

127

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Website Payments Standard HTML Variables

ABLE A.3 HTML Variables: Item Information

Name Description

quantity Number of items. The amount, shipping and tax are multiplied

by the quantity to derive the total payment amount. If this is a shopping cart transaction, PayPal appends the number of the item (e.g.

quantity1, quantity2).

NOTE: The value for quantity must be a positive integer.

Null, zero, or negative numbers are not allowed.

undefined_ quantity

1: allows buyer to specify the quantity.

NOTE: This variable is allowed only in Buy Now or Donations,

and not allowed in shopping carts.

on0 First option field name. If omitted, no variable is passed back to

you.

on1 Second option field name. If omitted, no variable is passed back

to you.

os0 First set of option values. If this option is selected through a text

box or radio button, each value should be no more than 64 characters. If this value is entered by the customer in a text field, there is a 200-character limit. If omitted, no variable is passed back to you.

NOTE: on0 must also be defined set.

Required or Optional

Character Length

Optional

Optional 1

Optional 64

Optional 64 or 200

See description.

os1 Second set of option values.

NOTE: on1 must also be set.

If this option is selected through a text box or radio button, each value should be no more than 64 characters. If this value is entered by the customer in a text field, there is a 200-character limit. If omitted, no variable is passed back to you.

TABLE A.4 HTML Variables: Display Information

Name Description

add Add an item to the PayPal-hosted shopping cart.

This variable must be set as follows:

add=1

The alternative is the display=1 variable, which allows the user to view the contents of the PayPal-hosted shopping cart.

If both

add and display are specified, display takes

precedence.

Optional 64 or 200

See description.

Required or Optional

Character Length

Required 1

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PayPal Website Payments Standard - 2005 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

How Website Payments Standard Works

Example of the Basic Page Sequence

How You Get Your Money

Notifications You Receive

Email

Transaction History

Downloadable History Log

Instant Payment Notification (IPN)

How To Use This Guide

Other Standard Products and Features

Related Online Information

Website Payments Pro

Authorization & Capture

Complementary Documentation

The Account Profile Summary

Account Information

Financial Information

Selling Preferences

Correspondence Between Profile Settings and HTML Variables

Branding PayPal’s Payment Pages

Working with Custom Payment Pages

Adding or Editing a Page Style

Making a Page Style Primary

Overriding Page Style Settings On Individual Transactions

Streamlining Purchases with Website Payment Preferences

Account Optional or Website Payments Express

Auto Return

Automatic Calculation of Shipping and Handling Cost and Tax

Blocking Certain Kinds of Payment

Adding Your Credit Card Statement Name

Getting Customer Contact Telephone Numbers

Language Encoding Your Data

Multi-User Access to Your PayPal Account

PayPal-Supported Currencies

Accepting or Denying Cross-Currency Payments

Issuing Refunds

Managing Currency Balances

Single-Item Payment: Buy Now and Donations

Using Buy Now or Donations Button Factory

Adding More Details to the Button

Copy and Paste the HTML Code

Sample Buy Now Button HTML and Hyperlink

Multiple-Item Payment: Shopping Cart

How the PayPal-Hosted Shopping Cart Works

What The Customer Sees

Button Factory for PayPal-Hosted Shopping Cart

Adding More Details to the Button

Copy and Paste the Shopping Cart HTML

Sample HTML for PayPal-Hosted Shopping Cart

How A Third-Party Shopping Cart Works

What The Customer Sees

What You See

Adding PayPal to Your Third-party Shopping Cart

Required Third-Party Shopping Cart Variables

Passing Individual Item Details to PayPal

Setting the Tax for the Entire Cart

Passing the Aggregate Shopping Cart Amount to PayPal

Encrypted Website Payments

Creating Your Public Certificate

Creating Your Private Key Using OpenSSL

Creating Your Public Certificate Using OpenSSL

Uploading Your Public Certificate

Downloading PayPal's Public Certificate

Removing Your Public Certificate

Blocking Unencrypted Website Payments

Testing in the PayPal Sandbox

FORM Attributes: ACTION and METHOD

Hidden Input Variables

Specifying the Website Payments Standard Product: cmd

Variations on Basic Variables

Prompting for Quantity in Buy Now or Donations: undefined_quantity

Recordkeeping with Passthrough Variables

Setting the Character Set: charset

Setting Return URL on Individual Transactions

Desired Currency on Individual Transactions