How To Fix M2440 - Generation currently locked by another transaction or user

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 440

• Message text: Generation currently locked by another transaction or user

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 M2440 - Generation currently locked by another transaction or user ?

  The SAP error message M2440, which states "Generation currently locked by another transaction or user," typically occurs in the context of material master data or related processes in SAP. This error indicates that a particular material or object is currently being processed or modified by another user or transaction, preventing your transaction from proceeding.
  Causes:
  
  Concurrent Access: Another user or transaction is currently editing or processing the same material or object.
  Long-Running Transactions: A transaction that takes a long time to complete may hold locks on the material, causing other transactions to wait.
  Background Jobs: A background job may be running that is locking the material or object.
  Database Locks: Database-level locks may be in place due to previous transactions that have not yet been committed or rolled back.
  
  Solutions:
  
  Wait and Retry: Often, the simplest solution is to wait for a few moments and then retry the transaction. The lock may be released once the other transaction completes.
  Identify the Lock: Use transaction code SM12 to check for locks on the material or object. You can see which user or transaction is holding the lock.
  
  If you have the necessary authorizations, you can also release the lock from this transaction.
  
  
  Check Background Jobs: Use transaction code SM37 to check if there are any background jobs that might be locking the material. If you find a job that is taking too long, you may need to investigate or terminate it.
  Communicate with Users: If you identify another user holding the lock, communicate with them to understand if they can release the lock or if they are still actively working on the material.
  System Administration: If the issue persists, it may require intervention from a system administrator to investigate further or to check for any underlying issues in the system.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM37: To monitor background jobs.
  SM21: To check system logs for any related errors or warnings.
  
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. SAP uses different types of locks (e.g., exclusive locks, shared locks) to manage concurrent access to data.
  User Training: Ensure that users are trained on how to properly manage transactions to minimize locking issues, such as completing transactions promptly and avoiding long-running processes when possible.
  
  If the problem continues to occur frequently, it may be worth reviewing the processes in place to identify any potential optimizations or adjustments that could reduce locking conflicts.