Purchase Order entry increases the On Order field for inventory items placed "on order" with vendors. When inventory items on the purchase order are received through Stock Additions, the on order box is decreased and the on-hand box is increased.
Use the Purchase Order option to create, view, edit, deleting, print purchase orders, and to verify on order and committed inventory.
Learn more about Purchase Orders feature:
Creating a Purchase Order
Viewing or Editing a Purchase Order
Deleting a Purchase Order
Printing Purchase Order Forms
Verifying On Order and Committed