How To Fix /SCWM/LK020 - Consistency problem: either block or unblock

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/LK -

• Message number: 020

• Message text: Consistency problem: either block or unblock

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/LK020 - Consistency problem: either block or unblock ?

  The SAP error message /SCWM/LK020 Consistency problem: either block or unblock typically occurs in the context of SAP Extended Warehouse Management (EWM) when there is an inconsistency in the handling of stock or inventory management processes. This error can arise due to various reasons, such as issues with stock blocking, inconsistencies in the stock data, or problems with the warehouse management processes.
  Causes:
  
  Inconsistent Stock Data: There may be discrepancies between the stock data in the system and the actual stock levels.
  Blocked Stock: The stock may be in a blocked status, preventing further processing.
  Warehouse Management Processes: Issues in the execution of warehouse processes, such as picking, putaway, or inventory counting, can lead to inconsistencies.
  System Configuration: Incorrect configuration settings in the EWM system can also lead to this error.
  
  Solutions:
  
  Check Stock Status: Verify the status of the stock in question. If it is blocked, determine the reason for the blockage and take appropriate action to unblock it if necessary.
  Consistency Check: Perform a consistency check on the stock data. This can often be done using transaction codes or reports that are specific to EWM.
  Reprocess Transactions: If the error occurred during a specific transaction (like a goods movement), try to reprocess that transaction after resolving any underlying issues.
  Review Configuration: Check the configuration settings in the EWM system to ensure they are set up correctly. This includes checking the settings for stock types, movement types, and warehouse processes.
  Consult Logs: Review system logs and error messages for additional details that may help identify the root cause of the inconsistency.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on resolving it.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in EWM, such as /SCWM/PRDI for stock management or /SCWM/PRDI for inventory management.
  Documentation: Refer to SAP documentation for EWM to understand the processes and configurations that may lead to this error.
  Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP EWM expert for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.