How To Fix VL157 - Error when locking

SAP Error Message - Details

• Message type: E = Error

• Message class: VL -

• Message number: 157

• Message text: Error when locking

What causes this issue?

During the preparation of available requirements per plant for a
material, a lock error error occurred.

System Response

INCLUDE 'NA_NO_EXECUTION' OBJECT DOKU ID TX LANGUAGE E

How to fix this error?

INCLUDE 'NA_SYSAD1' OBJECT DOKU ID TX LANGUAGE E

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VL157 - Error when locking ?

  The SAP error message VL157 ("Error when locking") typically occurs in the context of logistics and inventory management, particularly when dealing with delivery processing. This error indicates that there was an issue with locking the relevant data during a transaction, which can prevent the system from proceeding with the operation.
  Causes of VL157 Error
  
  Concurrent Access: The most common cause is that another user or process is currently accessing the same data, leading to a lock conflict.
  Database Lock Issues: There may be issues with the database locks that are not being released properly, causing subsequent requests to fail.
  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 lock management, causing timeouts and errors.
  Configuration Issues: Incorrect configuration in the SAP system related to locking mechanisms or transport requests can also lead to this error.
  
  Solutions to VL157 Error
  
  Check for Active Locks: Use transaction code SM12 to check for active locks on the relevant data. If you find locks that are no longer needed, you can delete them (if you have the necessary authorizations).
  Wait and Retry: If the error is due to concurrent access, waiting for a short period and then retrying the operation may resolve the issue.
  Review Long-running Transactions: Identify any long-running transactions that may be holding locks and optimize them if possible.
  System Performance Monitoring: Monitor system performance and database locks to identify any bottlenecks or issues that may be causing delays.
  Consult Basis Team: If the issue persists, consult your SAP Basis team to investigate any underlying database or system issues that may be causing the locking problems.
  Check Configuration: Review the configuration settings related to locking mechanisms in your SAP system to ensure they are set up correctly.
  
  Related Information
  
  
  Transaction Codes: 
  
  SM12: To view and manage locks.
  SM21: To check system logs for any related errors.
  ST22: To check for dumps that may provide more context on the error.
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the VL157 error. You can search for relevant notes in the SAP Support Portal.
  
  
  Documentation: Review SAP documentation related to delivery processing and locking mechanisms for more insights into how locks are managed in the system.
  
  
  If the error continues to occur after trying the above solutions, it may be necessary to escalate the issue to SAP support for further investigation.