As a document that shows the intent of a buyer to buy a certain quantity of products at a certain price from a specific vendor, a purchase order is an external document sent to a vendor as a written confirmation of what a buyer need to acquire. Depending on the legal jurisdiction involved, the purchase order can be considered to be a legally binding document. As such, a customer can request a vendor upon reception of the purchase order to communicate its intent in accepting or declining to provide the needed goods or services.