How To Fix IWB_MPS128 - The release you want to reassign must not be selected

SAP Error Message - Details

• Message type: E = Error

• Message class: IWB_MPS - Messages for Multi-Product Support

• Message number: 128

• Message text: The release you want to reassign must not be selected

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IWB_MPS128 - The release you want to reassign must not be selected ?

  The SAP error message IWB_MPS128 ("The release you want to reassign must not be selected") typically occurs in the context of managing releases in the SAP system, particularly when dealing with the reassignment of releases in the context of production planning or similar processes.
  Cause:
  This error usually arises when you attempt to reassign a release that is currently selected or in use. The system does not allow reassignment of a release that is actively being processed or has been marked for selection in the current session. This can happen if:
  
  The release is currently being processed or is locked by another user.
  The release is part of a selection set that is currently active.
  There are inconsistencies in the data or the state of the release.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Selection Status: Ensure that the release you are trying to reassign is not currently selected. You may need to deselect it or close any sessions that are using it.
  
  
  Release Lock: If the release is locked by another user, you may need to wait until that user has completed their processing. You can check for locks using transaction codes like SM12 to see if there are any active locks on the release.
  
  
  Refresh the Session: Sometimes, simply refreshing your session or logging out and back in can clear any temporary issues that might be causing the error.
  
  
  Review User Authorizations: Ensure that you have the necessary authorizations to perform the reassignment. Lack of proper permissions can sometimes lead to unexpected errors.
  
  
  Check for Background Jobs: If there are background jobs that are processing the release, you may need to wait until those jobs are completed.
  
  
  Consult Documentation: Review the relevant SAP documentation or help files for any specific notes related to the error message.
  
  
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD04 (Stock/Requirements List), MD05 (Individual Display of MRP List), and MD06 (Collective Display of MRP List) to monitor the status of releases.
  SAP Notes: Search for SAP Notes related to IWB_MPS128 for any specific fixes or updates that may address this issue.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.