How To Fix CNV_CDMC_CA125 - Error while establishing a connection to the RFC destination

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CA - CDMC 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_CDMC_CA125 - Error while establishing a connection to the RFC destination ?

  The SAP error message CNV_CDMC_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 the SAP Conversion Tools.
  Causes of CNV_CDMC_CA125
  
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This could include incorrect connection 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 access the target system.
  
  
  Target System Unavailability: The target system may be down or not reachable at the time of the connection attempt.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running on the target system, preventing the connection from being established.
  
  
  Solutions to CNV_CDMC_CA125
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the issue.
  Verify the connection parameters (such as the target system's IP address, system number, client, user, and password).
  Test the connection using the "Connection Test" option in SM59.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing access to the target system.
  Check if you can ping the target system from the source system.
  Verify firewall settings to ensure that the necessary ports are open for RFC communication.
  
  
  
  User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations in the target system.
  Check the user roles and profiles to confirm that they allow for the required operations.
  
  
  
  Check Target System Status:
  
  Ensure that the target system is up and running.
  If the target system is down, coordinate with the system administrators to bring it back online.
  
  
  
  SAP Gateway Service:
  
  Check if the SAP Gateway service is running on the target system.
  You can do this by using transaction SMGW to monitor the gateway status.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST22) for any additional error messages that might provide more context about the issue.
  
  
  
  Related Information
  
  Documentation: Refer to SAP Help documentation for more details on RFC connections and troubleshooting.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to CNV_CDMC_CA125.
  Community Forums: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the CNV_CDMC_CA125 error effectively.