A Purchase Order (PO) is an official document issued by a buyer to a seller, indicating the type, quantity, and agreed-upon price for products or services the seller will provide to the buyer. A Purchase Order is a legally binding document between a vendor and a buyer that outlines in detail the items, quantities, prices, payment terms, delivery dates, and other requirements of a transaction. Its purpose is to create a record of the buyer’s intent to purchase a product or service. A Purchase Order serves as a reference point and important documentation in the procurement process.