How To Fix CNV_MBT249 - RFC call to sender or receiver system failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 249

• Message text: RFC call to sender or receiver system failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT249 - RFC call to sender or receiver system failed ?

  The SAP error message CNV_MBT249 indicates that there was a failure in the RFC (Remote Function Call) communication between the sender and receiver systems during a data migration or conversion process. This error is often encountered in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Causes:
  
  Network Issues: There may be network connectivity problems between the source and target systems.
  RFC Destination Configuration: The RFC destination may not be correctly configured in the SAP system. This includes incorrect parameters, such as the target system's IP address, system number, or client.
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to perform the required actions in the target system.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Version Compatibility: There may be compatibility issues between the source and target systems, especially if they are running different versions of SAP.
  Timeouts: The RFC call may be timing out due to long processing times or heavy load on the systems.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the two systems. You can use tools like ping or telnet to test connectivity.
  Verify RFC Destination: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that all parameters are correct and that the connection can be tested successfully.
  Check Authorizations: Ensure that the user ID used for the RFC call has the necessary authorizations in both the source and target systems. You may need to consult with your security team to verify this.
  System Status: Check the status of the target system to ensure it is up and running. You can also check for any scheduled maintenance that might affect availability.
  Review Logs: Look at the application logs (transaction SLG1) and system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the failure.
  Increase Timeout Settings: If timeouts are suspected, consider increasing the timeout settings for the RFC connection in SM59.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: 
  
  SM59 - RFC Destinations
  SLG1 - Application Log
  SM21 - System Log
  
  
  SAP Documentation: Refer to the official SAP documentation for data migration and RFC communication for more detailed guidance.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.