How To Fix PO473 - Alternate server &1 has never been active; check spelling

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 473

• Message text: Alternate server &1 has never been active; check spelling

What causes this issue?

You have specified an alternate server that has never been active.

System Response

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

How to fix this error?

Use the "Possible entries" help to choose an active server.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO473 - Alternate server &1 has never been active; check spelling ?

  The SAP error message PO473 indicates that the alternate server specified in a process or configuration has never been active. This typically occurs in scenarios involving SAP's application server configuration, particularly when dealing with load balancing or failover setups.
  Cause:
  
  Incorrect Server Name: The alternate server name specified in the configuration might be misspelled or incorrectly formatted.
  Inactive Server: The server you are trying to reference has never been started or is not currently active in the SAP system landscape.
  Configuration Issues: There may be issues in the configuration settings related to the application server or the instance profile.
  Network Issues: There could be network connectivity issues preventing the system from recognizing the alternate server.
  
  Solution:
  
  Check Server Name: Verify the spelling of the alternate server name in the configuration. Ensure that it matches the actual server name as defined in the SAP system.
  Check Server Status: Use transaction code SM51 to check the status of the application servers. Ensure that the alternate server is listed and is in an active state.
  Review Configuration: Go to the relevant configuration settings (e.g., in transaction RZ10 for instance profiles) and ensure that the alternate server is correctly defined.
  Restart the Server: If the alternate server is not active, you may need to start it. This can be done through the SAP Management Console or by using the appropriate command in the operating system.
  Network Configuration: Ensure that there are no network issues preventing communication with the alternate server. Check firewall settings, DNS resolution, and network connectivity.
  Consult Documentation: Refer to SAP documentation or support notes related to your specific version and configuration for additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: 
  
  SM51: To view active application servers.
  RZ10: To manage instance profiles.
  RZ03: To check the status of the system.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to server configurations and error messages.
  System Landscape: Understanding your system landscape and how servers are configured can help in troubleshooting this error effectively.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.