Recipients can reverse a debt transaction but cannot refund a debt settle transaction against the debt.
You might want to write off a debt balance accumulated by a sender for business reasons like adjustment for errors, or as a promotion, or as a bad debt.
Amazon FPS provides a web service API to write-off debt that is accumulated on a Amazon Payments account. This API takes a credit instrument Id and a write off amount to reduce the debt balance. The write-off amount cannot exceed the debt balance on the credit instrument. You cannot reverse a write-off debt operation.