How To Fix VR523 - Host & for backgroung processing is not active

SAP Error Message - Details

• Message type: E = Error

• Message class: VR - Output for SD Reporting

• Message number: 523

• Message text: Host & for backgroung processing is not active

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VR523 - Host & for backgroung processing is not active ?

  SAP Error Message:
  
  VR523 - Host & for background processing is not active
  
  Cause:
  This error occurs when the SAP system tries to execute a background job or process that requires a specific host (application server) to be active for background processing, but that host is currently not active or not available for background jobs.
  In SAP, background jobs are executed on application servers that are configured to handle background processing. If the system tries to schedule or run a background job on a host that is not active or not configured for background processing, the VR523 error is triggered.
  
  Explanation:
  
  Each SAP application server can be configured to allow or disallow background processing.
  Background jobs are dispatched to servers that are active and have the background work process available.
  If the system references a host that is down, not active, or not configured for background jobs, the error VR523 appears.
  This can happen if the host is shut down, network issues prevent communication, or the server is not properly configured.
  
  
  Solution:
  
  
  Check Host Status:
  
  Use transaction SM51 to check the list of active application servers.
  Verify if the host mentioned in the error message is listed and active.
  
  
  
  Check Background Work Processes:
  
  In SM51, select the host and check if background work processes are available and running.
  If no background work processes are available, the host cannot process background jobs.
  
  
  
  Restart or Activate Host:
  
  If the host is down, restart the application server.
  Ensure the host is properly connected to the SAP system.
  
  
  
  Check Job Scheduling:
  
  Use transaction SM37 to check the job details.
  Verify if the job is scheduled to run on a specific host.
  If yes, consider rescheduling the job without specifying a host or specify an active host.
  
  
  
  Check Profile Parameters:
  
  Verify the profile parameters related to background processing, such as rdisp/wp_no_btc (number of background work processes).
  Ensure the host is configured to allow background processing.
  
  
  
  SAP System Logs:
  
  Check system logs via SM21 for any related errors or messages about host availability.
  
  
  
  Network and Infrastructure:
  
  Verify network connectivity between the SAP central instance and the application server.
  Check if any firewall or network issues are blocking communication.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM51 - List of active application servers.
  SM37 - Job monitoring.
  SM21 - System log.
  RZ10 - Profile parameter maintenance.
  ST22 - Dump analysis (in case of related short dumps).
  
  
  
  SAP Notes:
  
  Check SAP Notes related to background processing and host availability for your SAP version.
  Example: SAP Note 123456 (hypothetical) might describe similar issues.
  
  
  
  Background Processing:
  
  Background jobs require at least one active application server with background work processes.
  If you have multiple application servers, ensure load balancing and availability.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Background job assigned to a host that is not active or not configured for background processing.
  
  
  Solution
  Check host status (SM51), ensure background work processes are active, restart host if needed, reschedule jobs without specifying inactive hosts.
  
  
  Related Info
  Use SM37, SM21, RZ10; check network connectivity; verify profile parameters for background processing.
  
  
  
  
  If you need further assistance, please provide the exact host name and job details, and I can help you with more specific troubleshooting steps.