PayPal Subscription Payment Failed

问题:

When a subscription payment fails, PayPal will retry for n times.

What transaction type (subscr_cancel or subscr_eot) is sent back via IPN, after all retries fail?

回答1:

The specifics depend on the PayPal product you're using, although the logic works similar(`ish) across both Website Payments Standard subscription buttons and Express Checkout Recurring Payments (via the CreateRecurringPaymentsProfile API):

This depends on whether you've set MAXFAILEDPAYMENTS or not. If MAXFAILEDPAYMENTS > 0 is set, it will cancel the subscription after n number of attempts and you'll receive a subscr_cancel. If you have it set to MAXFAILEDPAYMENTS=0, you'll get recurring_payment_skipped and the recurring payment will be marked as having an outstanding balance. If you specify AUTOBILLOUTAMT=AutoBillAmt, the outstanding balance will be added to the next billing cycle.

I would suggest taking a look at https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_html_IPNandPDTVariables#id091EB0901HT which lists all IPN variables, including the ones for recurring payments.