Thank you! We'll try to pick up the record from array with checking cancellation_data!

Thank you! By following privided URL, I found the description about Test Refund. https://developer.apple.com/documentation/storekit/transaction/3803219-beginrefundrequest Test Initiating Refund Requests Test beginRefundRequest(for:in:) in the sandbox environment, where the App Store automatically approves the refund. It seems what I'm looking for!