Dunning FAQ

What happens if a customer is in dunning and they update their card?

The customer should be charged immediately.

How can I tell if a customer canceled or if their account was canceled due to dunning?

The cancellation_message for customers who are canceled for non-payment is “Canceled after failed automatic dunning process expired.”

It is also worth noting that customers who are canceled after dunning may have a valid card which simply didn’t have sufficient funds/credit to process the payment.