Retro-Billing Process
To execute the retro-billing process, proceed with the purchase order closing activities.
- Access your purchase order in the Purchase Order (tdpur4100m900) session.
 - Select the order line on the Order Lines tab.
 - Click . The Purchase Order Line Status (tdpur4534m000) session is displayed.
 - Review the activities of the purchase order line and confirm that only the Process Delivered Purchase Order activity must be executed.