To begin, let's go over what a credit memo is. A credit memo is commonly used to record any refund. To be honest, it is a commercial document that is typically issued by the buyer in relation to refunds that he makes. learn How to Delete a Credit on Quickbooks. Memos created in QuickBooks appear in the accounts receivable tab, which then appears in the specific customer centre section. Because these memos increase a customer's total credit, it is critical to understand How to Delete a Credit on Quickbooks. If you made the memos by mistake, it is strongly advised that you delete them rather than setting those specific memos in any specific transaction.