Go to Appointment Book, right-click any blank cell, and then select Search Invoice No/Receipt No.
Type the specific invoice number, and then click the orange arrow beside it.
Click the I want to list box, and then select Reopen.
The specified invoice has been reopened.
With the invoice open in the Point of Sale (POS) window, in the Collect Payment section, click the Transaction Details icon beside the added payment.
The Transaction Details window opens.
Type the Balance amount to be refunded, and then click Refund.
A message appears stating that the refund transaction has been completed successfully.