This includes using the overpayment to pay another invoice and receiving a refund from your supplier. You save the overpayment as a Payment on your Account. Once saved, use it to pay another invoice or match it to a refund.
The Payment on account will remain outstanding until you decide what to do.
If you want to use the overpayment to pay a subsequent invoice, then allocate the payment on account to the relevant invoice or invoices. Follow our guide on how to allocate existing transactions.
If the supplier sends you money back, you can refund a supplier payment on account.