You are totally right, There is no "Completed" status.
- When you start receiving quantities and a receipt is posted, the PO Status changes into (Released)
- When all the ordered quantities are fully received, the PO status changes into (Received)
On the other hand, the term "Completed" is used in Dynamics GP in the "Remove completed Purchase Orders" under Tools > Routines > Purchasing, to refer to either "Closed" or "Canceled" PO's
Best Regards,
Mahmoud AlSaadi