How To Fix NAA373 - Purchase order &1 was "flagged" (update not possible)

NAA373 - Overview

• Message type: E = Error

• Message class: NAA - Subsequent settlement (Purchasing)

• Message number: 373

• Message text: Purchase order &1 was "flagged" (update not possible)

What causes this issue?

The purchasing document &V1& was "flagged".
An update of business volume data is not possible for "flagged"
documents as they may contain errors. In addition, a business volume
update at this early stage does not make sense.
Calling function module 'MM'ARRANG_MCKONA_FILL' to execute the update
is therefore not allowed.

System Response

The update data is not created.

How to fix this error?

Contact your system administrator, as there is an internal program
error.
The arrangement concerned has number &V2&.

Error message extract from SAP system. Copyright SAP SE.

NAA373 - Details

• The SAP error message NAA373 indicates that a purchase order (PO) has been flagged, which prevents updates to that PO. This flagging can occur for various reasons, and understanding the cause is essential for resolving the issue.
  
  Cause:
  
  Manual Flagging: The purchase order may have been manually flagged by a user for various reasons, such as pending approvals or issues with the order.
  System Flags: Certain system processes or workflows may automatically flag a purchase order due to specific conditions, such as discrepancies in the order or issues with the vendor.
  Status of the Purchase Order: The purchase order may be in a status that does not allow updates, such as being in the process of being closed or archived.
  Approval Workflow: If the purchase order is part of an approval workflow, it may be flagged until all necessary approvals are obtained.
  
  
  Solution:
  
  Check the Purchase Order Status: Review the status of the purchase order in the