How To Fix CSM_ENSA013 - Network error. Could not reach standalone enqueue

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_ENSA - Standalone Enqueue Monitoring

• Message number: 013

• Message text: Network error. Could not reach standalone enqueue

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 CSM_ENSA013 - Network error. Could not reach standalone enqueue ?

  The SAP error message CSM_ENSA013 indicates a network error where the system is unable to reach the standalone enqueue server. This can occur in environments where the enqueue server is configured to run separately from the application server, which is common in high-availability setups.
  Causes:
  
  Network Issues: There may be network connectivity problems between the application server and the enqueue server.
  Enqueue Server Down: The standalone enqueue server may not be running or has crashed.
  Configuration Issues: Incorrect configuration settings in the SAP system regarding the enqueue server.
  Firewall Restrictions: Firewalls or security groups may be blocking the necessary ports for communication.
  DNS Resolution Issues: The hostname of the enqueue server may not be resolving correctly.
  
  Solutions:
  
  
  Check Enqueue Server Status:
  
  Ensure that the standalone enqueue server is up and running. You can check this using the SAP Management Console (SAP MC) or by logging into the server directly.
  
  
  
  Network Connectivity:
  
  Test the network connection between the application server and the enqueue server. You can use tools like ping or telnet to check connectivity on the required ports (default port for enqueue server is 3600).
  
  
  
  Review Configuration:
  
  Check the instance profile of the application server to ensure that the enqueue server's hostname and port are correctly configured. Look for parameters like enq/host and enq/port.
  
  
  
  Firewall Settings:
  
  Verify that there are no firewall rules blocking the communication between the application server and the enqueue server. Ensure that the necessary ports are open.
  
  
  
  DNS Resolution:
  
  If you are using a hostname to connect to the enqueue server, ensure that it resolves correctly. You can test this by using the nslookup or dig command.
  
  
  
  Check Logs:
  
  Review the logs of both the application server and the enqueue server for any additional error messages that might provide more context on the issue.
  
  
  
  Restart Services:
  
  If the enqueue server is down or unresponsive, consider restarting the enqueue server service.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to enqueue server issues for any specific patches or updates that may address known problems.
  SAP Documentation: Refer to the official SAP documentation for configuration and troubleshooting of the enqueue server.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the CSM_ENSA013 error effectively.