I am trying to refund a customer prepayment on POS and Contact center to a sales order that was prepaid.
Is a debit memo the best option?
If the sales order status is "Open order", you should see a Cancel button on the recall order screen on POS. Once you click cancel, the order will be loaded to the transaction screen where you can process the refund using any allowed payment method. If the order is invoiced, you will have to go through the return order process.