post https://spay.payments.wpay.com.au/v1/cancel
This endpoint allows you to send reversal request for previous transactions including requests that have not yet received any response from the Wpay API. You can also use this endpoint to send a VOID request.
The table below defines the pre-defined value of transactionType that API will accept
| transactionType | Description |
|---|---|
| CANCEL | To send a reversal request |
| VOID | To Void a PREAUTH transaction |