How To Fix MEPO120 - General lock on table &1 not possible (No adjustment of table)

SAP Error Message - Details

• Message type: E = Error

• Message class: MEPO - New Purchase Order Dialog

• Message number: 120

• Message text: General lock on table &1 not possible (No adjustment of table)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MEPO120 - General lock on table &1 not possible (No adjustment of table) ?

  The SAP error message MEPO120, which states "General lock on table &1 not possible (No adjustment of table)," typically occurs when there is an issue with locking mechanisms in the SAP system. This error is often related to the inability to lock a specific database table due to various reasons, such as concurrent access by multiple users or processes.
  Causes:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same table simultaneously, leading to a lock contention.
  Long-Running Transactions: A transaction that takes a long time to complete may hold a lock on the table, preventing other transactions from acquiring the necessary lock.
  Database Issues: There may be underlying database issues, such as deadlocks or resource contention, that prevent the lock from being acquired.
  Configuration Issues: Incorrect configuration settings in the SAP system or database can lead to locking problems.
  System Performance: High system load or performance issues can also affect the locking mechanism.
  
  Solutions:
  
  Identify and Terminate Long-Running Transactions: Use transaction codes like SM66 (Global Work Process Overview) or SM50 (Work Process Overview) to identify any long-running transactions that may be holding locks. If necessary, terminate these transactions.
  Check for Lock Entries: Use transaction code SM12 to check for existing lock entries on the table in question. If you find any unnecessary locks, you can delete them (with caution).
  Review System Performance: Monitor system performance and resource usage. If the system is under heavy load, consider optimizing performance or scheduling batch jobs during off-peak hours.
  Database Maintenance: Perform regular database maintenance to ensure that the database is functioning optimally. This may include checking for deadlocks and resolving any issues.
  Adjust Lock Settings: Review and adjust the locking settings in the SAP system if necessary. Consult with your SAP Basis team for guidance on appropriate settings.
  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 (Lock Entries), SM50 (Work Process Overview), and SM66 (Global Work Process Overview) for monitoring and managing locks.
  SAP Basis Team: Collaborate with your SAP Basis team for deeper analysis and resolution of locking issues, especially if they involve database-level configurations.
  Documentation: Refer to SAP documentation and community forums for additional insights and solutions related to locking issues.
  
  If the problem persists after trying the above solutions, it may be necessary to escalate the issue to SAP support for further investigation.