No refund is made even if I conducted refund multiple times.
How to refund?
When does the refund status "REFUND_FAILED" occur?
Please tell me the status and timing when the cancellation API (Delete a Code, Cancel a payment, Revert a payment authorization, Refund a payment) can be used.
As a result of executing Refund a payment, the response status is "CREATED". What is this like?
Is "reason" displayed somewhere?
How long can I cancel with the Cancel a payment API?
How long is the refundable period?
How can It use Refund API and Cancel API properly?
Is partial refund possible?