Paypal IPN Initial and Subsequent Responses

Question

I'm working on a project that deals with different payments using Paypal, that is,

• one-time payments
• subscriptions
• instalments

I'm just curious about these issues:

1. Is the notification URL being called after a buyer is auto-debited for each subscription/instalment cycle (e.g. monthly, annual, etc.)?
2. If #1 is true, is there a difference in the IPN response for the initial subscription/instalment payment and subsequent payments for that same order?
3. If #1 and #2 are true, can you give me a sample response string to demonstrate the difference?

Thanks in advanced.

Answer 1

Below are additional variables that are used for Instant Payment Notifications for Subscriptions and Recurring Payments

https://www.paypal.com/nz/cgi-bin/webscr?cmd=p/acc/ipn-subscriptions-outside