Three-way matching in accounts payable is an important process for businesses to ensure accuracy and accountability in their financial records. It is a three-step process that involves comparing the purchase order, the goods received, and the invoice to make sure that all three documents match. This process is used to prevent errors in payment, as well as to detect any potential fraud or discrepancies. By comparing the three documents, businesses can ensure that the goods received are what was ordered, and that the invoice is accurate and has been approved. This process is also used to ensure that the correct amount is paid to the supplier, and that the payment is made in a timely manner. Three-way matching is an essential part of any accounts payable process, and is a key factor in ensuring accuracy and accountability in financial records.