How To Fix /SCWM/MFS452 - TCP/IP connection in wrong state (&1); stop triggered

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MFS -

• Message number: 452

• Message text: TCP/IP connection in wrong state (&1); stop triggered

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/MFS452 - TCP/IP connection in wrong state (&1); stop triggered ?

  The SAP error message /SCWM/MFS452 TCP/IP connection in wrong state (&1); stop triggered typically occurs in the context of the SAP Extended Warehouse Management (EWM) system when there is an issue with the TCP/IP connection between the EWM system and the Material Flow System (MFS). This error indicates that the connection is not in the expected state, which can disrupt communication and lead to operational issues.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP EWM and the MFS.
  Configuration Errors: Incorrect configuration settings in the MFS or EWM can lead to connection issues.
  Service Availability: The MFS service may not be running or may have crashed.
  Timeouts: The connection may have timed out due to inactivity or long processing times.
  Firewall Settings: Firewalls or security settings may be blocking the TCP/IP connection.
  Version Mismatch: Incompatibility between the versions of EWM and MFS can also lead to connection issues.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the EWM and MFS systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify MFS Service: Check if the MFS service is running properly. Restart the service if necessary.
  Review Configuration: Double-check the configuration settings in both EWM and MFS to ensure they are correct and consistent.
  Monitor Connection State: Use transaction codes like /SCWM/MFS to monitor the connection state and identify any anomalies.
  Check Logs: Review the application logs in both EWM and MFS for any error messages or warnings that could provide more context about the issue.
  Firewall and Security Settings: Ensure that the necessary ports are open and that there are no firewall rules blocking the connection.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the configuration.
  Update Software: Ensure that both EWM and MFS are running compatible versions. If there are updates available, consider applying them.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for EWM and MFS for detailed configuration and troubleshooting guidelines.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the /SCWM/MFS452 error effectively.