QuickBooks Online (QBO) is a widely used accounting software for small to medium-sized businesses, offering a variety of features to manage finances efficiently. However, users may occasionally encounter errors that disrupt their workflow. One such error is the "Refund Customer Overpayment Error." Understanding this error and knowing how to resolve it can save users significant time and frustration. 

The Refund Customer Overpayment Error occurs when a user attempts to refund a customer for an overpayment and encounters difficulties in processing the transaction within QBO. This error can manifest due to several reasons, including discrepancies in the accounts receivable, incorrect data entry, or issues with the refund processing workflow.