How To Fix MDM_CLF_LEAN204 - General lock error occurred

SAP Error Message - Details

• Message type: E = Error

• Message class: MDM_CLF_LEAN - MDM Lean Classification - Reuse Parts

• Message number: 204

• Message text: General lock error occurred

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 MDM_CLF_LEAN204 - General lock error occurred ?

  The SAP error message MDM_CLF_LEAN204 indicates a general lock error that has occurred in the Master Data Management (MDM) system. This type of error typically arises when there is a conflict in accessing a resource that is currently locked by another process or user. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Concurrent Access: The most common cause of this error is that multiple users or processes are trying to access or modify the same data simultaneously, leading to a lock conflict.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold a lock on the data longer than expected, causing other transactions to fail.
  System Configuration: Incorrect configuration of lock parameters or settings in the MDM system can also lead to lock errors.
  Database Issues: Problems with the underlying database, such as deadlocks or resource contention, can also trigger this error.
  
  Solutions
  
  Retry the Operation: Often, simply retrying the operation after a short wait can resolve the issue, especially if it was caused by a temporary lock.
  Check for Active Sessions: Use transaction codes like SM12 (to view and manage locks) to check for active sessions that may be holding locks on the data you are trying to access. If you identify a session that is no longer active, you may need to release the lock.
  Review Long-Running Transactions: Identify any long-running transactions that may be causing locks and optimize them if possible. This may involve breaking them into smaller transactions or improving performance.
  Adjust Lock Parameters: Review and adjust the lock parameters in the MDM configuration if necessary. Consult with your SAP Basis team for guidance on optimal settings.
  Database Maintenance: Perform regular database maintenance to ensure that there are no underlying issues causing lock contention. This may include checking for deadlocks and optimizing database performance.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view locks), SM21 (to view system logs), and ST22 (to check for dumps) for troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for MDM and locking mechanisms to better understand how locks are managed within the system.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or contact SAP support for further assistance.