I have used paypal subscription button for a monthly subscription. I have used IPN to receive the notification for each recurring payment. In case the recurring attempt fails due to insufficient balance, what will be the transaction type from the IPN to listen. And is there a way that the customer wants to continue the same subscription after it gets canceled due to insufficient balance. Also how can I test the insufficient balance scenario from sandbox account. Please guide me as I am stuck in between of the development.
