
Express Checkout and Direct Payment Simulator Guide August 2006 5
Preface
About this Document
This document provides guidelines for testing your implementation of Express Checkout and
Direct Payment and for interpreting the results.
For complete information on the function calls and parameters referred to in this document,
see the Payflow Pro Developer’s Guide.
For specific details on how to implement Website Payments Pro Payflow Edition through the
Payflow Software Developer’s Kit (SDK), see the documentation provided with the Payflow
SDK. Implement the function calls as described, and then modify your application to point to
the test environment to conduct testing.
Audience
This guide assumes that its users:
z Are experienced Web or application developers
z Have a background in payments services
The user should also be familiar with Payflow Pro Developer’s Guide. That document, along
with this guide, are the primary sources of information on developing payments applications
using the Payflow SDK.
Conventions Used in this Guide
In this guide, you refers to the merchant and buyer refers to a customer of the merchant.
Where to Go for More Information
For more information, see the Payflow Pro Developer’s Guide.
For answers to specific questions about Payflow products, search PayPal’s Knowledge Base at
the following URL:
http://knowledge.paypal.com/.
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