How To Fix /ISDFPS/LM_STB_APP563 - Lock error: Lock for master equipment &1 cannot be set

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/LM_STB_APP -

• Message number: 563

• Message text: Lock error: Lock for master equipment &1 cannot be set

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 /ISDFPS/LM_STB_APP563 - Lock error: Lock for master equipment &1 cannot be set ?

  The SAP error message /ISDFPS/LM_STB_APP563 indicates a lock error related to a master equipment in the SAP system. This typically occurs when multiple users or processes are trying to access or modify the same piece of equipment simultaneously, leading to a conflict in locking mechanisms.
  Cause:
  
  Concurrent Access: The most common cause is that another user or process is currently editing or has locked the master equipment you are trying to access.
  Long-running Transactions: If a transaction is taking too long to complete, it may hold the lock longer than expected, preventing others from accessing the equipment.
  System Configuration: There may be issues with the configuration of the locking mechanism in the SAP system.
  Database Locks: Sometimes, database-level locks can also cause this issue if the underlying database is experiencing contention.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue.
  Check for Active Sessions: Use transaction codes like SM12 (to view and manage locks) to check if there are any active sessions holding locks on the master equipment. If you find a session that is no longer active or is stuck, you may need to terminate it.
  Communicate with Users: If you identify that another user is working on the same equipment, communicate with them to coordinate access.
  Review Long-running Transactions: Check for any long-running transactions that may be holding locks and address them accordingly.
  System Configuration Review: If this issue occurs frequently, it may be worth reviewing the system configuration related to locking mechanisms to ensure they are set up correctly.
  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 Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team to investigate further, especially if it relates to system performance or configuration.
  Documentation: Refer to SAP documentation for more details on locking mechanisms and best practices for managing concurrent access to master data.
  
  By following these steps, you should be able to diagnose and resolve the lock error related to the master equipment in your SAP system.