Remittance advice is a critical document in the Order to Cash (O2C) cycle, particularly within the Accounts Receivable function, as it provides detailed information about a customer’s payment. It is issued by the customer to the seller to explain how an invoice or multiple invoices are being settled. The primary purpose of remittance advice is to help the seller accurately apply incoming payments to the correct customer accounts and outstanding invoices, thereby ensuring proper reconciliation and reducing ambiguities in cash application. In the O2C process, once goods or services are delivered and invoices are generated, the seller awaits payment from the customer. When the customer makes a payment through cheque, bank transfer, electronic funds transfer, or other digital payment methods, remittance advice accompanies or follows the payment. This advice typically includes details such as the customer name, invoice numbers, invoice dates, gross invoice amounts, discounts taken, deductions, taxes, credit notes applied, and the net amount paid. By providing