CNV222 - No RFC connection in system &1. Switch to "Backup".

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 222

• Message text: No RFC connection in system &1. Switch to "Backup".

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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AnswerBot

• What is the cause and solution for SAP error message CNV222 - No RFC connection in system &1. Switch to "Backup". ?

  The SAP error message "CNV222 No RFC connection in system &1. Switch to 'Backup'." typically indicates that there is an issue with the Remote Function Call (RFC) connection to the specified system. This error is often encountered during data migration or system conversion processes, particularly when using SAP's Software Update Manager (SUM) or other tools that require RFC connections to communicate between systems.
  Cause:
  
  
  RFC Connection Issues: The primary cause of this error is that the system is unable to establish an RFC connection to the target system (denoted as &1 in the error message). This could be due to:
  
  Incorrect configuration of the RFC destination in transaction SM59.
  Network issues preventing communication between the systems.
  The target system being down or not reachable.
  Authorization issues that prevent the user from establishing the connection.
  
  
  
  Configuration Errors: There may be misconfigurations in the SAP system settings or in the transport layer that affect the ability to connect to the target system.
  
  
  System Load: High load on the target system may also lead to connection timeouts or failures.
  
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the RFC destination that corresponds to the target system. Ensure that the connection type is correct (e.g., TCP/IP) and that the target system's hostname and port are correctly specified.
  
  
  
  Test Connection:
  
  In SM59, select the RFC destination and use the "Test Connection" button to check if the connection can be established successfully. If it fails, review the error message for more details.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the systems. You can use tools like ping or telnet to check connectivity to the target system's hostname and port.
  
  
  
  Check System Status:
  
  Verify that the target system is up and running. Check for any maintenance activities or downtimes that might affect connectivity.
  
  
  
  Authorization:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to connect to the target system.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that might provide more context about the issue.
  
  
  
  Switch to Backup:
  
  If the primary connection cannot be established, consider switching to a backup connection if one is configured. This can often be done in the configuration settings of the tool you are using.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Documentation: Review the documentation for the specific SAP tool or process you are using, as it may have specific requirements or configurations for RFC connections.
  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 cause of the "CNV222 No RFC connection" error in your SAP system.