How To Fix CNV_CMIS_A_20273 - Error in establishing RFC Connection.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO)

• Message number: 273

• Message text: Error in establishing RFC Connection.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CMIS_A_20273 - Error in establishing RFC Connection. ?

  The SAP error message CNV_CMIS_A_20273 indicates that there is an issue with establishing an RFC (Remote Function Call) connection. This error typically arises during data migration or system conversion processes, particularly when using tools like SAP S/4HANA Migration Cockpit or other conversion tools.
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved in the RFC connection.
  Incorrect RFC Destination: The RFC destination may not be correctly configured in the SAP system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  Firewall Restrictions: Firewalls may be blocking the required ports for RFC communication.
  System Configuration: The target system may not be properly configured to accept RFC connections.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the systems is stable and operational. You can use tools like ping or traceroute to test connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the connection type, target host, and system number are correctly set.
  
  
  
  Test RFC Connection:
  
  In transaction SM59, select the RFC destination and use the "Test Connection" button to verify if the connection can be established successfully.
  
  
  
  Check User Authorizations:
  
  Ensure that the user ID used for the RFC connection has the necessary authorizations to perform the required actions. You can check this in transaction SU01.
  
  
  
  Review SAP Gateway Configuration:
  
  Ensure that the SAP Gateway is running and properly configured. You can check the status of the Gateway using transaction SMGW.
  
  
  
  Firewall Settings:
  
  Check the firewall settings on both the source and target systems to ensure that the necessary ports for RFC communication (typically port 3200 for SAP) are open.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST22) for any additional error messages that may provide more context about the issue.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  RFC Connection Types: Understand the different types of RFC connections (e.g., T, 3, and M) and their configurations.
  SAP Documentation: Refer to the official SAP documentation for detailed guidance on setting up and troubleshooting RFC connections.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP Support for further assistance.