User's Manual
Table Of Contents
- Preface
- Introduction
- PayPal Payments Overview
- Getting Started
- PayPal Account Optional
- Creating Buy Now and Donation Buttons
- Creating Shopping Cart Buttons
- Adding PayPal to Your Third- party Shopping Cart
- Custom Payment Pages
- Calculating Shipping, Handling, and Tax
- Creating Customer Contact Telephone
- Auto Return
- Backend Integration - Payment Notifications
- Using Multiple Currencies
- Language Encoding for Your Data
- Testing
- Processing eChecks
- Security
- HTML Samples
- IPN and PDT Variables
- About These Tables of Variables
- test_ipn Variable in Sandbox
- IPN Variables in All Posts
- Buyer Information
- Basic Information
- Advanced and Custom Information
- Shopping Cart Information
- Currency and Currency Exchange
- Auctions
- Mass Payment
- Subscriptions Variables
- Dispute Notification Variables
- PDT-Specific Variables
- Country Codes
Merchant User Manual and Integration Guide May, 2005 57
Creating Buy Now and Donation Buttons
Notifications You Receive
5
Instant Payment Notification (IPN)
If you have Instant Payment Notification activated, you will receive an IPN when a payment is
first sent, which will state the status of the payment (Completed or Pending). If the payment
was Pending, you will receive another IPN when the payment clears, fails, or is denied.
To learn more about IPN, see “Instant Payment Notification (IPN) ” on page 103.