post https://mapi.pockyt.io/app-data-search/v3/cancel
This API enables the Merchant's POS system to trigger a cancellation notification for a transaction, especially when a customer abandons the process or when the cashier needs to initiate a cancellation instruction after the initial transaction number has been generated. Its primary purpose is to facilitate the cancellation of payment transactions in cases where the transaction is abandoned before final submission.
You can use transactionNo or reference but not the two at the same time for the request