How To Fix /SCWM/MEDI079 - &1 messages occurred during locking

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MEDI -

• Message number: 079

• Message text: &1 messages occurred during locking

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/MEDI079 - &1 messages occurred during locking ?

  The SAP error message /SCWM/MEDI079 typically indicates that there was an issue with locking during a process in the Extended Warehouse Management (EWM) module. This error can occur in various scenarios, such as during the processing of inbound or outbound deliveries, stock transfers, or other warehouse management activities.
  Cause:
  The error message /SCWM/MEDI079 generally occurs due to one of the following reasons:
  
  
  Lock Conflicts: Another process or transaction is holding a lock on the same object (e.g., a delivery, handling unit, or stock) that you are trying to access or modify. This can happen if multiple users or processes are trying to work on the same data simultaneously.
  
  
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, leading to conflicts with other transactions.
  
  
  System Performance Issues: High system load or performance issues can lead to delays in releasing locks, causing subsequent transactions to fail.
  
  
  Configuration Issues: Incorrect configuration in the EWM system can also lead to locking issues.
  
  
  Solution:
  To resolve the /SCWM/MEDI079 error, you can take the following steps:
  
  
  Identify Lock Holders: Use transaction code SM12 to check for existing locks. You can identify which user or process is holding the lock on the object you are trying to access. If necessary, you can delete the lock entries (with caution) if they are no longer needed.
  
  
  Retry the Operation: After identifying and resolving any lock conflicts, retry the operation that caused the error.
  
  
  Optimize Transactions: Review the processes that are causing long locks and optimize them to reduce the time they hold locks. This may involve breaking down large transactions into smaller ones or improving performance.
  
  
  Check System Performance: Monitor system performance and resource usage. If the system is under heavy load, consider optimizing the database or increasing system resources.
  
  
  Review Configuration: Ensure that the EWM configuration is set up correctly and that there are no issues that could lead to locking problems.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  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 help diagnose issues.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  Documentation: Review SAP documentation related to EWM and locking mechanisms to better understand how locks are managed within the system.
  
  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.