How To Fix /SCMB/TDL_DAO028 - Error during locking

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/TDL_DAO -

• Message number: 028

• Message text: Error during locking

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 /SCMB/TDL_DAO028 - Error during locking ?

  The SAP error message /SCMB/TDL_DAO028 Error during locking typically occurs in the context of the SAP Supply Chain Management (SCM) module, particularly when dealing with transport and logistics data. This error indicates that there was an issue with locking a particular object or resource during a transaction, which is often necessary to ensure data integrity and prevent concurrent modifications.
  Causes:
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing the same object, leading to a lock conflict.
  Long-running Transactions: If a transaction takes too long to complete, it may hold a lock longer than expected, causing other transactions to fail when they attempt to access the same object.
  System Performance Issues: High system load or performance issues can lead to delays in lock management, resulting in errors.
  Configuration Issues: Incorrect configuration in the SCM module or related components may lead to locking issues.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. If you find locks that are no longer needed, you can delete them (if you have the necessary authorizations).
  Retry the Operation: Sometimes, simply retrying the operation after a short wait can resolve the issue, especially if it was caused by a temporary lock.
  Optimize Transactions: Review and optimize long-running transactions to ensure they complete quickly and release locks in a timely manner.
  System Monitoring: Monitor system performance and load to identify any bottlenecks that may be causing locking issues.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches and updates.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose issues.
  User Authorizations: Ensure that users have the appropriate authorizations to access and modify the objects in question.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the locking issue.
  
  By following these steps, you should be able to diagnose and resolve the /SCMB/TDL_DAO028 Error during locking error in SAP.