How To Fix MEPO124 - Not possible to lock table &1 (No adjustment of table)

SAP Error Message - Details

• Message type: E = Error

• Message class: MEPO - New Purchase Order Dialog

• Message number: 124

• Message text: Not possible to lock table &1 (No adjustment of table)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MEPO124 - Not possible to lock table &1 (No adjustment of table) ?

  The SAP error message MEPO124 indicates that the system is unable to lock a specific table, which prevents adjustments or updates to that table. This error typically occurs in the context of purchasing documents, such as purchase orders or contracts, when the system tries to perform an operation that requires exclusive access to a database table.
  Cause:
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing the table, preventing your transaction from obtaining the necessary lock.
  Long-running Transactions: If a transaction is taking too long to complete, it may hold the lock on the table longer than expected.
  Database Issues: There may be underlying database issues, such as deadlocks or other locking mechanisms that are causing the table to be unavailable.
  Configuration Issues: Sometimes, configuration settings in the SAP system can lead to locking issues.
  
  Solution:
  
  Wait and Retry: If the error is due to concurrent access, waiting for a short period and then retrying the operation may resolve the issue.
  Check for Active Sessions: Use transaction codes like SM12 (to check for locks) and SM21 (to check system logs) to identify if there are any active sessions that are holding locks on the table.
  Terminate Long-running Transactions: If you identify a session that is holding a lock for an extended period, you may need to terminate that session (with caution) using transaction SM12.
  Database Administration: If the issue persists, it may require intervention from your database administrator to check for deadlocks or other locking issues at the database level.
  Review Configuration: Ensure that your SAP system is configured correctly and that there are no settings that could lead to excessive locking.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks), SM21 (to view system logs), and ST22 (to check for dumps).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search the SAP Support Portal for relevant notes.
  System Performance: Monitor system performance to ensure that it is not being impacted by high load or resource contention, which can exacerbate locking issues.
  User Training: Ensure that users are trained on best practices for using the system to minimize the chances of locking issues.
  
  If the problem persists after trying the above solutions, it may be necessary to escalate the issue to your SAP Basis team or SAP support for further investigation.