You are unable to add attachments to a purchase order created with account assignment as Sales Order because of an error message: Sales Order item is disabled for posting; item is completed.
Reproducing the Issue
- Go to the Purchase Requests and Orders.
- Select the Purchase Orders view.
- Select Edit button.
- Select Order button.
When you try attach the documents in the purchase order and save the document , it creates a fresh notification in financials. In this case, sales order is in completed status. With the completed sales orders, finanacials cannot porocess the new notification at all. So system displays the error message when you do some changes in the purchase order.
System is working as designed.
KBA , AP-PRP , Purchase Request Processing , How To