How To Fix CNV_NCE_BAS205 - Could not connect to the source system

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 205

• Message text: Could not connect to the source system

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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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_NCE_BAS205 - Could not connect to the source system ?

  The SAP error message CNV_NCE_BAS205: Could not connect to the source system typically occurs during data migration or system conversion processes, particularly when using SAP's tools for data transfer, such as the SAP S/4HANA Migration Cockpit or other data migration tools.
  Causes:
  
  Network Issues: There may be network connectivity problems between the source system and the target system.
  Incorrect Configuration: The connection parameters (like hostname, port, user credentials) may be incorrectly configured.
  Source System Down: The source system might be down or not accessible at the time of the connection attempt.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection between the systems.
  Authorization Issues: The user credentials used for the connection may not have the necessary permissions to access the source system.
  Technical Issues: There could be technical issues with the source system, such as database problems or service outages.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the source and target systems is stable and operational. You can use tools like ping or traceroute to diagnose network issues.
  Verify Connection Parameters: Double-check the connection settings in the configuration. Ensure that the hostname, port, and user credentials are correct.
  Check Source System Status: Make sure that the source system is up and running. You can try logging into the source system directly to confirm its availability.
  Review Firewall Settings: If applicable, check the firewall settings on both the source and target systems to ensure that they allow traffic on the required ports.
  Validate User Permissions: Ensure that the user account being used to connect has the necessary permissions to access the source system.
  Consult Logs: Review the logs in both the source and target systems for any additional error messages or warnings that could provide more context about the issue.
  Restart Services: If the source system is experiencing issues, restarting the relevant services or the entire system may help resolve the problem.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to the official SAP documentation for the specific migration tool you are using, as it may provide additional troubleshooting steps or configuration guidelines.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.