Updating Purchase Orders
You can update purchase orders in two ways:
Update a single purchase order at a time by retrieving the purchase order, modifying its properties, and calling the UpdatePurchaseOrder method of the PurchaseOrderManager object to save the modified purchase order.
Update many purchase orders at the same time by creating an XML document to identify the purchase orders and the properties to change, and calling the UpdatePurchaseOrderProperties method of the PurchaseOrderManager object to save the modified purchase orders.
The topics in this section describe both ways to update purchase orders.