How To Fix PU139 - Postprocessing necessary when upgrade/update completed

PU139 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 139

• Message text: Postprocessing necessary when upgrade/update completed

What causes this issue?

A program occurred in an upgrade or in a support package import that is
preventing the process from continuing. For details, see the message
&V1&&V2&.
Follow-up actions are required after the upgrade or support package
import has finished.

System Response

The process continues without interruption. After the upgrade or import
has finished, the system again indicates the problem that occurred.

How to fix this error?

Do not interrupt the process.
Read to the previous message &V1&&V2& and its long text. It contains
further information about the problem that occurred.
In an upgrade: Check whether the previous message &V1&&V2& is mentioned
in the upgrade guide or in the supplementary upgrade note.
If you cannot find sufficient information here to correct the problem,
look for SAP Notes SAP Support Portal (https://support.sap.com). As a
keyword for this search, use the message number of the preceding message
and of this message:
&V1&&V2&
PU139
If you still cannot find sufficient information, contact SAP Support.
Specify the following information:
The message numbers &V1&&V2&
PU139
In upgrades, the name of the upgrade phase in which the problem
occurred.

Error message extract from SAP system. Copyright SAP SE.

PU139 - Details

• The SAP error message PU139, which states "Postprocessing necessary when upgrade/update completed," typically occurs after an upgrade or update of the SAP system. This message indicates that there are certain post-processing tasks that need to be completed to ensure that the system is functioning correctly after the upgrade.
  
  Cause:
  
  Incomplete Upgrade Process: The upgrade or update process may not have completed all necessary steps, leading to the need for additional post-processing.
  Missing Data: Certain data or configurations may not have been migrated or updated correctly during the upgrade.
  Custom Code Issues: Custom developments or modifications may not be compatible with the new version, requiring adjustments.
  Missing or Incomplete Notes: SAP Notes that are required for the upgrade may not have been applied.
  
  
  Solution:
  
  
  Run Post-Processing Jobs: 
  
  Check the SAP system for any scheduled post-processing jobs that need to be executed. You can do this by navigating to transaction code SM37 to monitor job status.
  Execute the necessary post-processing