Integration Guide

Table Of Contents
Introducing Express Checkout
Express Checkout Building Blocks
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18 May 2010 Express Checkout Integration Guide
z The token that was included in the redirect to PayPal
z The buyers unique identifier (Payer ID)
If the buyer cancels, PayPal redirects to the cancel URL with the token that was included in the
redirect to PayPal.
Express Checkout Token Usage
Express Checkout uses a token to control access to PayPal and execute Express Checkout API
operations.
The SetExpressCheckout API operation returns a token, which is used by other Express
Checkout API operations and by the _ExpressCheckout command to identify the
transaction. The life of the token is approximately 3 hours.