Detecting cancellation of a paypal billing agreement setup with reference transactions

Question

I am using the 'reference transactions' of the Paypal express checkout api to set up a recurring billing scenario for our customers. I have chosen this method since the amount billed per month will vary and there is no initial payment when entering into the billing agreement.

My question is, can I use the paypal IPN to detect when the user cancels this? I know that if the customer enters into this agreement they have the power to log into their own Paypal account and cancel the agreement. What variables should I be listening for through the IPN?

Whilst I see mention of recurring payments and recurring payment profiles in the IPN documentation these are not actually the same as setting up a recurring billing scenario via reference transactions (recurring payments and reference transactions are in two different parts of the general paypal api documentation).

Answer 1

在您的PayPal帐户中启用IPN，然后PayPal将通过IPN通知您有关客户取消结算协议的信息。

Answer 2

If you include IPN with SetExpressCheckout, it will not work with Reference Transaction. You need to Enable IPN on PayPal site.