Applicable scenario: In retail, customers return purchased goods through the checkout system and receive a refund or exchange.

Return operation process: The cashier uses barcode scanning or manually inputs the product number that needs to be returned, clicks the "Return (Ctrl+R)" button, and both the quantity and amount will become negative. Select the refund method and confirm the amount, make a negative payment, print the return order, have the customer sign and confirm, refund the customer's amount, and complete the return. The system automatically generates a return record, and the accounting records are adjusted accordingly.