User Guide

IPN Guide June, 2009 5
Preface
This document describes the Instant Payment Notification (IPN) message service.
Intended Audience
This document is intended for merchants implementing IPN.
Revision History
Revision history for Instant Payment Notification Guide.
TABLE P.1 Revision History
Date Description
06/26/09 Added information about IPN messages related to payment review. Updated the
section about setting up IPN notifications on PayPal and added a note about the
delivery of IPN messages to the notify URL.
06/10/09 Added IPN history and resend information and added information to the
troubleshooting section.
03/16/09 Made additions to sample code.
02/16/09 First draft.