How To Fix /SCWM/MFS459 - Checking all communication points for PLC &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MFS -

• Message number: 459

• Message text: Checking all communication points for PLC &1

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/MFS459 - Checking all communication points for PLC &1 ?

  The SAP error message /SCWM/MFS459 Checking all communication points for PLC &1 is related to the integration between SAP Extended Warehouse Management (EWM) and a Programmable Logic Controller (PLC) in a Material Flow System (MFS) environment. This error typically indicates that there is an issue with the communication between the SAP system and the PLC.
  Cause:
  
  Communication Failure: The error may arise due to a failure in the communication link between the SAP EWM system and the PLC. This could be due to network issues, incorrect configuration, or the PLC being offline.
  Configuration Issues: Incorrect settings in the communication parameters for the PLC in the SAP system can lead to this error.
  PLC Status: The PLC may not be in a ready state or may have encountered an error that prevents it from communicating with the SAP system.
  Firewall or Security Settings: Firewalls or security settings may be blocking the communication between the SAP system and the PLC.
  
  Solution:
  
  Check PLC Status: Ensure that the PLC is powered on and functioning correctly. Check for any error messages or alerts on the PLC itself.
  Network Connectivity: Verify that the network connection between the SAP system and the PLC is stable. You can use tools like ping or traceroute to check connectivity.
  Configuration Review: Review the configuration settings in SAP for the PLC communication. Ensure that the communication parameters (like IP address, port number, etc.) are correctly set.
  Logs and Monitoring: Check the logs in both the SAP system and the PLC for any error messages that could provide more context about the issue.
  Firewall Settings: If applicable, check the firewall settings to ensure that they are not blocking the communication ports used by the SAP system and the PLC.
  Restart Services: Sometimes, restarting the communication services or the PLC itself can resolve transient issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to MFS and PLC communication.
  Documentation: Refer to the SAP EWM and MFS documentation for detailed information on configuring and troubleshooting communication with PLCs.
  Support: If the issue persists after checking the above points, consider reaching out to SAP support or your system administrator for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the communication issue indicated by the error message /SCWM/MFS459.