What is a Void transaction?

A Void transaction nullifies an authorised transaction by moving it to the list of failed payments to ensure that it does not get sent for settlement. However, the information is only removed from the Sage Pay system and may still remain active on the acquiring bank's system as authorisation had already been obtained.  Even though an online reversal is sent when a VOID is performed, this does not guarantee that the shadow will be removed.

Please note that once a Void has been performed, there is no way of reversing it and should you need to obtain the funds from the shopper again, you will need to process another transaction.
A Void is usually performed if a transaction has not yet been sent for settlement. This will remove the transaction from the settlement list and will not be included within the daily batch file to your acquiring bank ensuring that the funds are not transferred. As the transaction is not sent for settlement, then the payment will not be debited from the customer’s account but may appear on the customer’s statement as a shadow. 

A Void can only be performed on a REAL-TIME PAYMENT, a MANUAL PAYMENT, a RELEASE, a REPEAT, an AUTHORISE or a REFUND transaction and only before the transaction has been sent for settlement. Once the transaction has been settled, you will not be able to perform a Void and should you need to stop a transaction, you will need to perform a refund.