How To Fix CNVMBTRFC103 - Destination &1 with communication failure message '&2'.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTRFC - Messages used in RFC Management and its objects

• Message number: 103

• Message text: Destination &1 with communication failure message '&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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBTRFC103 - Destination &1 with communication failure message '&2'. ?

  The SAP error message CNVMBTRFC103 indicates a communication failure with a specific destination in the context of Remote Function Calls (RFC). This error typically arises during data migration or when using the SAP Landscape Transformation (SLT) tool, and it can be caused by various issues related to network connectivity, configuration, or system settings.
  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, port, or user credentials.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the required actions.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication between the systems.
  SAP Gateway Issues: Problems with the SAP Gateway service on either the source or target system can lead to communication failures.
  
  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 (e.g., TCP/IP connection).
  Test the connection using the "Connection Test" button to see if it is working correctly.
  
  
  Review User Authorizations: Ensure that the user specified in the RFC destination has the necessary authorizations to access the target system.
  Check System Status: Verify that the target system is up and running. You can check the system logs or use transaction SM51 to see the status of application servers.
  Firewall and Security Settings: Ensure that any firewalls or security settings allow traffic between the source and target systems on the required ports.
  SAP Gateway Configuration: Check the SAP Gateway settings on both systems to ensure they are correctly configured and running.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: To manage RFC destinations.
  SMGW: To monitor the SAP Gateway.
  SM21: To check system logs for errors.
  ST22: To analyze dumps that may provide more context on the error.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to CNVMBTRFC103 or RFC communication problems.
  Documentation: Review the SAP documentation for the specific tools or processes you are using (e.g., SLT, data migration) for any additional configuration steps or troubleshooting tips.
  
  By following these steps, you should be able to identify and resolve the communication failure indicated by the CNVMBTRFC103 error message.