How To Fix /SCWM/MFS448 - Start of communication channel &1 &2 failed; asynchronous RFC issue

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/MFS -

• Message number: 448

• Message text: Start of communication channel &1 &2 failed; asynchronous RFC issue

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/MFS448 - Start of communication channel &1 &2 failed; asynchronous RFC issue ?

  The SAP error message /SCWM/MFS448 Start of communication channel &1 &2 failed; asynchronous RFC issue typically indicates a problem with the communication between different SAP systems or between an SAP system and an external system. This error is often related to the use of Asynchronous Remote Function Calls (RFC) in the context of the SAP Extended Warehouse Management (EWM) and the Manufacturing Execution System (MES) integration.
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved.
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect settings for the target system, such as the hostname, system number, or client.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to execute the required functions.
  System Load: High system load or performance issues can lead to timeouts or failures in establishing the communication channel.
  Service Availability: The target system or service may be down or not available at the time of the request.
  Incorrect Parameters: The parameters being passed in the RFC call may be incorrect or not in the expected format.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that is being used. Ensure that the connection type, target host, and other parameters are correct.
  Test the connection from SM59 to see if it is successful.
  
  
  Review Authorizations: Ensure that the user credentials used for the RFC connection have the necessary authorizations to perform the required actions.
  Monitor System Performance: Check the performance of both the source and target systems. Look for any performance bottlenecks or high load situations that could affect communication.
  Check Service Status: Ensure that the target system or service is up and running. You may need to contact the system administrator if the service is down.
  Review Logs: Check the application logs (transaction SLG1) and system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  Parameter Validation: Ensure that the parameters being passed in the RFC call are correct and in the expected format.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to this error.
  Documentation: Review the SAP documentation for EWM and MFS for any specific configuration or setup requirements that may be relevant to your scenario.
  Support: If the issue persists after troubleshooting, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to identify and resolve the issue causing the /SCWM/MFS448 error message.