Community Support Forums

When a member CANCELS, Paypal seems to send 2 different IPNs, about 20 seconds apart, which I see in my log (paypal-ipn.log) as:
- subscr_cancel
- recurring_payment_profile_cancel

They BOTH trigger the s2m API Cancellations Notification, for which I have some php that sends an email to the site owner, who therefore gets two (nearly) identical emails when a member cancels.

The IPN log shows that s2m is aware of the duplication:

Code: Select all

4 => 'Ignoring Cancellation. An Auto-EOT Time is already set for this Member. An s2Member API Notification will still be processed however.',
5 => 'Cancellation Notification URLs have been processed.',

How can I PREVENT one of the API Notifications from being processed, or somehow distinguish between the two different IPNs, so that my routine runs only once?

Thanks for reporting this.
Yea, PayPal is known to do that every once in awhile.

In your script that handles your custom routine, I would take the %%subscr_id%% value and write a temporary file to disk. On the second Notification, check for the existence of that temporary file. If it exists, don't process it again.