How To Fix SCRM228 - Lost CSN connection

SAP Error Message - Details

• Message type: E = Error

• Message class: SCRM - Check Results Management

• Message number: 228

• Message text: Lost CSN 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SCRM228 - Lost CSN connection ?

  The SAP error message SCRM228, which indicates a "Lost CSN connection," typically relates to issues with the connection to the Central Service Number (CSN) in the SAP system landscape. This error can occur in various scenarios, particularly in systems that utilize the SAP Landscape Management (LaMa) or when there are issues with the communication between different SAP instances.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP application server and the CSN can lead to this error.
  Configuration Errors: Incorrect configuration settings in the SAP system or in the CSN setup can cause connectivity issues.
  Service Availability: The CSN service may be down or not running properly, leading to a loss of connection.
  Firewall or Security Settings: Firewalls or security settings may block the necessary ports or protocols required for CSN communication.
  Resource Limitations: Insufficient system resources (CPU, memory) on the server hosting the CSN can lead to connection drops.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is stable network connectivity between the SAP application server and the CSN. Use tools like ping or traceroute to diagnose network issues.
  Verify CSN Configuration: Review the configuration settings for the CSN in the SAP system. Ensure that all parameters are correctly set and that the CSN is properly registered.
  Restart CSN Services: If the CSN service is down, restart it. This can often resolve temporary issues.
  Check Firewall Settings: Ensure that the necessary ports for CSN communication are open and not blocked by firewalls or security settings.
  Monitor System Resources: Check the resource usage on the server hosting the CSN. If resources are low, consider optimizing the system or upgrading hardware.
  Review Logs: Check the SAP system logs (transaction SM21) and the CSN logs for any additional error messages or warnings that could provide more context on the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for guidance on configuring and troubleshooting CSN connections.
  
  If the issue persists after trying the above solutions, it may be necessary to involve SAP support for further assistance.