To change the tender type after a sale has been invoiced, follow the steps below:
In the main menu, go to Sales and select Sales Search.
Click the pen icon 
in the Actions column for the sale where you want to change the Tender type
Select the Payments button.
Select Make Refund in the Payments modal.
Select the checkbox next to the displayed payment line. Enter the full refund amount in the Refund Amount field. In this case, you do not need to select a refund method from the Options drop-down. The system will automatically default to the original payment method used.
Select Pay.
A Confirm Refund modal will appear. Click Proceed to continue.
The Payments modal will reopen.
Select the appropriate Tender type from the list, then click Pay 
.
This completes the process of changing the tender type after a sale has been invoiced.
