How To Fix /SCDL/ADAPTER_MP023 - Locking error

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCDL/ADAPTER_MP -

• Message number: 023

• Message text: Locking error

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCDL/ADAPTER_MP023 - Locking error ?

  The SAP error message /SCDL/ADAPTER_MP023 Locking error typically occurs in the context of SAP Supply Chain Management (SCM) or Advanced Planning and Optimization (APO) when there is an issue related to data locking during the execution of a process. This error can arise due to various reasons, including concurrent access to the same data by multiple users or processes, or issues with the locking mechanism in the system.
  Causes:
  
  Concurrent Access: Multiple users or processes trying to access or modify the same data simultaneously can lead to locking conflicts.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other transactions to fail.
  System Configuration: Incorrect configuration of the locking mechanism or settings in the SAP system can lead to locking issues.
  Database Issues: Problems with the underlying database, such as deadlocks or resource contention, can also cause locking errors.
  
  Solutions:
  
  Identify the Lock: Use transaction code SM12 to check for existing locks. You can identify the user or process holding the lock and take appropriate action.
  Release Locks: If you find unnecessary locks, you can manually release them using SM12, but be cautious as this may affect other users.
  Optimize Transactions: Review and optimize long-running transactions to ensure they complete in a timely manner, reducing the likelihood of locking issues.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as these may contain fixes for known locking issues.
  Review Configuration: Check the configuration settings related to locking in your SAP system to ensure they are set correctly.
  Consult SAP Notes: Look for relevant SAP Notes that may address specific issues related to the locking error you are encountering.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose issues.
  SAP Community: Engage with the SAP Community or forums to see if others have encountered similar issues and what solutions they found effective.
  Documentation: Refer to SAP documentation for detailed information on locking mechanisms and best practices for managing locks in SAP systems.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation and resolution.