How To Fix CNV_CDOP_CA125 - Error while establishing a connection to the RFC destination

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDOP_CA - CDOP Clearing Analysis

• Message number: 125

• Message text: Error while establishing a connection to the RFC destination

What causes this issue?

The system could not establish an RFC connection to the selected
destination.

System Response

The activity cannot be executed on the remote system.

How to fix this error?

Check if the RFC destination you have chosen is correct. If this is the
case, check for communication problems and ask your system
administrator to ensure that there is a connection to the selected
system.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDOP_CA125 - Error while establishing a connection to the RFC destination ?

  The SAP error message CNV_CDOP_CA125 indicates that there is an issue with establishing a connection to the RFC (Remote Function Call) destination. This error typically arises in the context of data migration or conversion processes, particularly when using tools like SAP's Data Migration Workbench or other conversion tools.
  Causes of CNV_CDOP_CA125
  
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect parameters such as the target system's hostname, system number, client, user credentials, etc.
  
  
  Network Issues: There may be network connectivity issues between the source and target systems. This could be due to firewall settings, network outages, or incorrect routing.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to establish the connection.
  
  
  SAP System Down: The target SAP system may be down or not reachable at the time of the connection attempt.
  
  
  Incorrect SAP Gateway Settings: The gateway settings in the SAP system may not be configured properly, leading to connection failures.
  
  
  Solutions to CNV_CDOP_CA125
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the issue.
  Verify the configuration settings, including the target system's hostname, system number, client, and user credentials.
  Test the connection using the "Test Connection" button to see if it succeeds.
  
  
  
  Network Troubleshooting:
  
  Ensure that the network connection between the systems is stable and operational.
  Check for any firewall rules that might be blocking the connection.
  Use tools like ping or telnet to verify connectivity to the target system.
  
  
  
  User Authorization:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  Check the user roles and profiles in the target system.
  
  
  
  Check Target System Status:
  
  Verify that the target SAP system is up and running.
  Check for any maintenance activities or downtimes that might affect connectivity.
  
  
  
  Review Gateway Settings:
  
  Check the gateway settings in the SAP system to ensure they are configured correctly.
  You can review the settings in transaction SMGW.
  
  
  
  Consult 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.
  
  
  
  Related Information
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections and the CNV_CDOP_CA125 error.
  Documentation: Review the official SAP documentation for the tools you are using for data migration or conversion, as they may provide additional troubleshooting steps or configuration guidelines.
  Community Forums: Consider checking SAP Community forums or other online resources where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the CNV_CDOP_CA125 error effectively.