CNV225 - No RFC connection to backup system &1. Check the connection!

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 225

• Message text: No RFC connection to backup system &1. Check the connection!

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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AnswerBot

• What is the cause and solution for SAP error message CNV225 - No RFC connection to backup system &1. Check the connection! ?

  The SAP error message "CNV225 No RFC connection to backup system &1. Check the connection!" typically indicates that there is an issue with the Remote Function Call (RFC) connection to a backup system specified in the error message. This can occur during data migration or system conversion processes, particularly when using tools like SAP S/4HANA Migration Cockpit or SAP Landscape Transformation (SLT).
  Causes:
  
  Network Issues: There may be network connectivity problems between the source system and the backup system.
  RFC Destination Configuration: The RFC destination for the backup system 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 to connect to the backup system.
  System Availability: The backup system may be down or not reachable due to maintenance or other issues.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the backup system.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the source system can reach the backup system.
  Ensure that there are no network outages or issues.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination for the backup system. Ensure that the connection type is correct (e.g., TCP/IP) and that the target host and service are correctly specified.
  Test the connection from SM59 to see if it is successful.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the backup system.
  You may need to check the roles and profiles assigned to the user.
  
  
  
  Check Backup System Status:
  
  Verify that the backup system is up and running. You can check the system logs or contact the system administrator for the backup system.
  
  
  
  Firewall and Security Settings:
  
  Ensure that any firewalls or security settings allow traffic between the source and backup systems on the required ports.
  Consult with your network/security team if necessary.
  
  
  
  Review SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59 (RFC Destinations)
  SM21 (System Log)
  ST22 (Dump Analysis)
  SICF (HTTP Services)
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on configuring RFC connections and troubleshooting connectivity issues.
  
  
  SAP Community: You can also search for similar issues in the SAP Community forums, where other users may have encountered and resolved the same error.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the "CNV225 No RFC connection to backup system" error.