How To Fix /SCWM/MFS420 - Resource &1 is blocked with exception code &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MFS -

• Message number: 420

• Message text: Resource &1 is blocked with exception code &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/MFS420 - Resource &1 is blocked with exception code &2 ?

  The SAP error message /SCWM/MFS420 Resource &1 is blocked with exception code &2 typically occurs in the context of the SAP Extended Warehouse Management (EWM) system, particularly when dealing with the Material Flow System (MFS). This error indicates that a specific resource (like a conveyor, automated storage/retrieval system, etc.) is blocked due to a certain exception code.
  Causes:
  
  Resource Blockage: The resource identified by &1 is currently blocked due to an issue that needs to be resolved. The exception code &2 provides specific information about the nature of the blockage.
  Configuration Issues: There may be configuration issues in the MFS settings or the resource management settings.
  Operational Issues: The resource may be undergoing maintenance, or there may be operational constraints (like a full buffer or a malfunction).
  System Errors: There could be underlying system errors or inconsistencies in the database that are causing the resource to be blocked.
  
  Solutions:
  
  Check Exception Code: Look up the specific exception code &2 in the SAP documentation or system to understand the exact reason for the blockage. Each code corresponds to a specific issue.
  Resource Status: Check the status of the resource &1 in the system. You can do this through transaction codes like /SCWM/MFS or relevant monitoring tools in EWM.
  Clear Blockage: Depending on the cause, you may need to clear the blockage. This could involve:
  
  Releasing the resource if it is blocked due to a temporary issue.
  Performing maintenance or repairs if the resource is malfunctioning.
  Adjusting configurations if they are incorrect.
  
  
  Consult Logs: Review system logs and error messages for additional context on why the resource is blocked. This can provide insights into whether it’s a recurring issue or a one-time event.
  Contact Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support or your internal IT team for further assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to the error message.
  Documentation: Review the SAP EWM and MFS documentation for best practices on resource management and troubleshooting.
  Training: Ensure that users are trained on how to handle resource blockages and understand the implications of exception codes.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the error message /SCWM/MFS420 Resource &1 is blocked with exception code &2.