How To Fix LX839 - No application server was selected

SAP Error Message - Details

• Message type: E = Error

• Message class: LX - SAPDXfer: Central Tools - Initial Data Transfer

• Message number: 839

• Message text: No application server was selected

What causes this issue?

You want to transfer the BOM data from a sequential file into the SAP
System. The sequential file may be held on an application server, the
presentation server or on a non-SAP application server. If the
sequential file is to be imported by a non-SAP application server, you
must specify the server name.

How to fix this error?

Enter a name in the 'Server name' field. You can use the input help
(F4).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LX839 - No application server was selected ?

  The SAP error message LX839, which states "No application server was selected," typically occurs when the system is unable to find a suitable application server to process the request. This can happen for various reasons, and understanding the cause is essential for troubleshooting the issue.
  Causes:
  
  Network Issues: There may be network connectivity problems between the client and the SAP application servers.
  Server Configuration: The application servers may not be properly configured or may be down.
  Load Balancer Issues: If a load balancer is used, it may not be directing traffic correctly to the available application servers.
  SAP Instance Down: The specific SAP instance you are trying to connect to may be down or not running.
  Client Configuration: The client configuration in the SAP GUI may not be set up correctly, leading to an inability to connect to any application server.
  Authorization Issues: There may be authorization issues preventing the selection of an application server.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues preventing access to the SAP application servers. You can use tools like ping or tracert to check connectivity.
  Verify Server Status: Check the status of the application servers using transaction code SM51 in the SAP GUI. Ensure that the servers are up and running.
  Review Load Balancer Configuration: If a load balancer is in use, verify that it is configured correctly and that it is routing requests to the available application servers.
  Check SAP Instance: Use transaction SMICM to check if the instance is running and accessible.
  Client Configuration: Review the SAP GUI configuration. Ensure that the correct system and instance are specified in the SAP GUI connection settings.
  Authorization Check: Ensure that the user has the necessary authorizations to access the application server. Check user roles and profiles in transaction SU01.
  Restart SAP Services: If the issue persists, consider restarting the SAP services or the application server itself, if you have the necessary permissions.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. You can search for relevant notes in the SAP Support Portal.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the LX839 error message in SAP.