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Using Instant Payment Notification Data
Amazon Simple Pay returns IPN transaction information as an HTTP post. For more information, see Handling Instant Payment Notification Responses. You are notified of the following:
a payment succeeds or fails
a refund succeeds or fails
a reserved payment succeeds or fails to settle
a subscription request succeeds
a subscription cancels successfully
a subscription completes (runs to term)
See Appendix: IPN Response Elements for Transactions for the HTTP post parameters which can be included in an IPN post.
