1. Press Receipts.
2. In the Receipt Tasks menu, press Add a new receipt.
3. Select the Customer from the drop down list that requires a refund. 
4. In the Date field insert the date for this transaction.
5. Enter any additional information you may want to have displayed on the refund  Example:  Customer overpayment refund.
6. Select the Use Unallocated Payment check box. Note:  A credit note requires another receipt to be created to refund the credit note.
7. Select to either Print, Save or Save & Add New receipt.
8. Press Yes to complete the transaction. Note - press Refund if you are completing a refund for a credit note.

If your customer wishes to apply their overpayment to another unpaid invoice you will need to follow this process.

1. Press Receipts.  
2. In the Receipt Tasks menu, press Add a new receipt. 
3. Select the Customer from the drop down list that requires an overpayment to be applied to an unpaid invoice. 
4. In the Date field insert the date for this transaction. 
5. Enter any additional information you may want to have displayed on the transaction. Example:  Customer overpayment applied to outstanding account. 
6. Select the Use Unallocated Payment check box.
7. If the Unallocated Payment is able to pay an Unpaid in full, select the checkbox marked Fully then proceed to Step 9.
8. If the Unallocated Payment can only form a part payment on an Unpaid Invoice, insert the amount of the Unallocated Payment in the Amount Paid field then proceed to Step 9. 
9. Select to either Print, Save or Save & Add New receipt.
10. Click Yes to complete the transaction.