How To Fix LQ405 - Unknown error occurred when locking Table &

LQ405 - Overview

• Message type: E = Error

• Message class: LQ - Proposal Pool Management

• Message number: 405

• Message text: Unknown error occurred when locking Table &

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 LQ405 - Unknown error occurred when locking Table & ?

  The SAP error message LQ405 ("Unknown error occurred when locking Table &") typically indicates that there is an issue with the locking mechanism in the SAP system, specifically related to the table mentioned in the error message. This can occur in various scenarios, such as during data processing, updates, or when multiple users are trying to access the same data concurrently.
  Possible Causes:
  
  Database Lock Conflicts: Another transaction may have locked the table, preventing your transaction from acquiring the necessary lock.
  Database Issues: There may be underlying database issues, such as corruption or connectivity problems.
  System Performance: High system load or performance issues can lead to timeouts or failures in acquiring locks.
  
  Configuration Issues: Incorrect configuration settings in the SAP system or database can lead to locking issues.
  Transport Issues: If the error occurs during a transport, it may be related to the transport process itself.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing