Is it possible to specify the notify-url for a billing plan when creating it? I am using the PHP Rest SDK 1.7.4.
I did read somewhere that it is possible to do this in the merchant preferences, I have tried this but get the response:
"VALIDATION_ERROR","details":[{"field":"merchant_preferences.notify_url","issue":"Field is invalid in a request."}]
Is the recommendation to do this out of date like most of the information about using PayPal?
How can I get a cancellation of a billing agreement to notify a PayPal IPN handler (without setting the IPN address in the PayPal UI)? I don't want to use webhooks.
https://github.com/paypal/PayPal-PHP-SDK/issues/236
I think it don't supported yet~