I set up an IPN inside Paypal to hit every time a Recurring Payment using Payflow Pro is set to go through. How can I make it send back the variable for the custom ID I need to make sure that I can use to extend the membership?
So far I have tried ProfileID, payer_business_name, option_name1, rp_invoice_id, invoice, and custom, none are sent back when it goes through.
The
customvariable should certainly work, if it was included in the POST. Alternatively you can add any variable name=value pair you like to the notify_url, as long as they don't conflict with PayPal's IPN variables.