How To Fix EM451 - Lock activated

EM451 - Overview

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 451

• Message text: Lock activated

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message EM451 - Lock activated ?

  The SAP error message EM451, which indicates "Lock activated," typically occurs when a user tries to access or modify a resource that is currently locked by another user or process. This locking mechanism is a part of SAP's concurrency control to ensure data integrity and prevent conflicts during simultaneous access.
  Causes:
  
  User Lock: Another user is currently editing or has locked the object (e.g., a document, transaction, or record).
  System Lock: The system itself may have a lock in place due to a background job or a transaction that is still processing.
  Transaction Errors: An error in a previous transaction may have left a lock in place.
  Long-running Transactions: A transaction that takes a long time to complete may hold a lock longer than expected.
  
  Solutions:
  
  Wait and Retry: If the lock is temporary, waiting for the other user or process to complete their task may resolve the issue.
  Identify the Lock: Use transaction codes like SM12 (for