How To Fix L1591 - Error while changing an MGEF record

SAP Error Message - Details

• Message type: E = Error

• Message class: L1 - Message handling for WM master data

• Message number: 591

• Message text: Error while changing an MGEF record

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message L1591 - Error while changing an MGEF record ?

  The SAP error message L1591, which states "Error while changing an MGEF record," typically occurs in the context of Material Management (MM) or Logistics when there is an issue with modifying a record in the Material Master or related data structures. The MGEF record refers to the material group data in the system.
  Causes:
  
  Data Integrity Issues: The record you are trying to change may have data integrity issues, such as missing mandatory fields or invalid data formats.
  Authorization Problems: The user may not have the necessary authorizations to change the MGEF record.
  System Locking: The record might be locked by another user or process, preventing changes.
  Configuration Issues: There may be configuration settings in the system that are preventing the change.
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they might be interfering with the standard process.
  
  Solutions:
  
  Check Data Validity: Ensure that all required fields are filled out correctly and that the data adheres to the expected formats.
  Review Authorizations: Verify that the user has the necessary permissions to make changes to the MGEF record. This can be done by checking the user roles and authorizations in the system.
  Check for Locks: Use transaction codes like SM12 to check if the record is locked by another user. If it is, you may need to wait until the lock is released or contact the user who has locked it.
  Review Configuration: Check the configuration settings related to the Material Master and MGEF records to ensure they are set up correctly.
  Debug Custom Code: If there are custom enhancements, consider debugging the code to identify any issues that may be causing the error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM02 (Change Material), MM03 (Display Material), and SM12 (Display and Delete Locks).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP documentation related to Material Management and MGEF records for more context on the data structure and requirements.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation.