To process a refund, follow these steps:
Open the app and click on Transactions in the main menu.
From the transaction list on the left-hand side, select the transaction you want to refund.
Click on Issue refund.
Choose whether to refund by Amount or Items.
If refunding a specific amount, enter the amount required and click Apply > Continue.
If refunding by item, select the items by checkbox.
Click Continue.
Select the reason for the refund.
Click Continue.
Note that the refunded transaction will be shown on your transactions list.