This API method allows the calling application to Void a Reward Bank exchange transaction using the original Wallet Transaction Reference. This operation will reverse the original exchange transaction, crediting the points account with the original transaction amount and also cancelling the reward associated with the exchange. If there was an exchange limit set against the Reward Bank, or the Reward Bank Link, the usage will be decremented to allow a further exchange to be made.
This operation will fail if the Reward associated with the original exchange has a status of USED. If the Reward has already been cancelled or is otherwise no longer valid to reinstate (e.g. EXPIRED), the Void Exchange operation will still occur and credit points and usage but the Reward will remain in its current state. Additionally if an exchange limit has been set against a personal Reward Bank with an expiry and the date has passed, the Void Exchange will still occur without reactivating the Reward Bank Link.