Hi, we are implementing our IPN listener . Since we need do something in response to the failure subscription payment in sandbox environment , we want to know how to make a subscription payment fail then we can get the ipn content for testing . I have check the developer page (https://developer.paypal.com/docs/classic/ipn/integration-guide/IPNandPDTVariables/), but it seems there are two txn_types , recurring_payment_failed and subscr_failed. I am not sure which one is for my situation. for example, JULY 3, create a monthly subscription profile, and payment for first month is successful.(got 2 ipn, txn_type=subscr_signup and subscr_payment) Augest 3 , the payment failed(assume setting no re-attemp) . what is the txn_type value and other fields of this ipn? we want to simulate this .
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