How To Fix WRF_REF142 - Start reproc. of &1 mat/plant-combin.(s) due to locking problems at &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_REF - Messages from References for Materials Without History

• Message number: 142

• Message text: Start reproc. of &1 mat/plant-combin.(s) due to locking problems at &2 &3

What causes this issue?

The system could not process &V1& material/plant combinations because of
locking problems. The system processes these combinations a second time
sequentially. Processing started at &V2& &V3&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

For information only.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_REF142 - Start reproc. of &1 mat/plant-combin.(s) due to locking problems at &2 &3 ?

  The SAP error message WRF_REF142 indicates that there is a locking issue when trying to reprocess material/plant combinations in the system. This typically occurs in the context of the SAP Retail module, particularly when dealing with material master data or related processes.
  Cause:
  The error is caused by a locking conflict in the database. This can happen for several reasons:
  
  Concurrent Processes: Another user or process is currently accessing or modifying the same material/plant combination, leading to a lock.
  Long-running Transactions: A transaction that takes a long time to complete may hold locks longer than expected, causing other processes to wait and eventually fail.
  System Performance Issues: If the system is under heavy load, it may not be able to handle multiple requests efficiently, leading to locking issues.
  
  Solution:
  To resolve the WRF_REF142 error, you can take the following steps:
  
  
  Identify Locking Processes:
  
  Use transaction code SM12 to check for existing locks on the material/plant combinations. You can filter by user or object to find the specific locks.
  If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations).
  
  
  
  Wait and Retry:
  
  If the locking process is legitimate and necessary, you may need to wait for it to complete before retrying your operation.
  
  
  
  Optimize Long-running Transactions:
  
  Review the processes that are taking a long time and see if they can be optimized to reduce the time they hold locks.
  
  
  
  Check System Performance:
  
  Monitor system performance and resource usage. If the system is under heavy load, consider scheduling intensive processes during off-peak hours.
  
  
  
  Consult with Basis Team:
  
  If the issue persists, consult with your SAP Basis team to investigate any underlying system issues or to check for any configuration settings that may be contributing to the locking problems.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM12: To view and manage locks.
  SM21: To check system logs for any related errors or warnings.
  ST22: To check for dumps that may provide additional context on the issue.
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking problems in the specific version of SAP you are using.
  
  
  Documentation: Review SAP documentation related to material management and locking mechanisms to better understand how locks are managed in your environment.
  
  
  By following these steps, you should be able to address the locking issue indicated by the WRF_REF142 error message.