How To Fix TL821 - Target host & does not have any work processes for background processing

SAP Error Message - Details

• Message type: E = Error

• Message class: TL - Messages for language transports

• Message number: 821

• Message text: Target host & does not have any work processes for background processing

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 TL821 - Target host & does not have any work processes for background processing ?

  The SAP error message TL821 indicates that the target host does not have any work processes available for background processing. This can occur in various scenarios, particularly when trying to execute background jobs or when a system is configured to use a specific application server that is currently not available for background processing.
  Causes:
  
  No Background Work Processes: The target application server does not have any background work processes configured or available.
  Server Configuration: The server may be configured incorrectly, or the background processing settings may not be properly set up.
  System Load: The server may be overloaded, causing it to not accept new background jobs.
  Network Issues: There may be network connectivity issues preventing the job from reaching the target server.
  Server Down: The target server may be down or not running.
  
  Solutions:
  
  
  Check Work Process Configuration:
  
  Go to transaction code RZ10 or RZ11 to check the profile parameters related to background processing.
  Ensure that the instance has background work processes configured. You can check this in the instance profile settings.
  
  
  
  Review Instance Status:
  
  Use transaction SM51 to check the status of all application servers. Ensure that the target server is up and running.
  Check if the server is in a "green" state and has available background work processes.
  
  
  
  Adjust Background Processing Settings:
  
  If necessary, adjust the number of background work processes in the instance profile. This can be done in the instance profile settings (e.g., rdisp/wp_no_btc).
  
  
  
  Monitor System Load:
  
  Use transaction SM66 to monitor the global work process overview. Check if the background processes are busy or if there are any long-running jobs that may be blocking new jobs.
  
  
  
  Check for Job Scheduling Issues:
  
  Use transaction SM37 to check the status of background jobs. Look for any jobs that may be stuck or failing.
  
  
  
  Restart the Application Server:
  
  If the server is not responding or if there are configuration issues, consider restarting the application server.
  
  
  
  Network Configuration:
  
  Ensure that there are no network issues preventing communication between the application server and the database or other components.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to background processing and work process configuration for any specific issues or patches that may apply to your version of SAP.
  Documentation: Refer to the SAP Help Portal for detailed documentation on configuring background processing and work processes.
  System Logs: Review system logs (transaction SM21) for any errors or warnings that may provide additional context for the issue.
  
  By following these steps, you should be able to diagnose and resolve the TL821 error in your SAP system.