How To Fix CNV_PE_SEL041 - Preselection scheduler is already running

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_SEL -

• Message number: 041

• Message text: Preselection scheduler is already running

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_SEL041 - Preselection scheduler is already running ?

  The SAP error message CNV_PE_SEL041 indicates that the preselection scheduler is already running. This typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error arises when an attempt is made to start a preselection process while another instance of the preselection scheduler is already active. This can happen due to:
  
  Concurrent Execution: Another user or process is already executing the preselection scheduler.
  Stale Processes: A previous instance of the scheduler did not terminate properly and is still running in the background.
  System Configuration: Configuration settings that allow multiple instances to run simultaneously may not be set up correctly.
  
  Solution:
  To resolve the CNV_PE_SEL041 error, you can take the following steps:
  
  
  Check Running Processes:
  
  Use transaction SM50 or SM66 to check for any active processes related to the preselection scheduler. Look for any processes that might be stuck or running longer than expected.
  
  
  
  Terminate Stale Processes:
  
  If you find any stale or unnecessary processes, you can terminate them. Be cautious when doing this, as terminating a process can lead to data inconsistencies if it is in the middle of a critical operation.
  
  
  
  Wait for Completion:
  
  If another user is running the preselection scheduler, you may need to wait until that process completes before starting your own.
  
  
  
  Review Logs:
  
  Check the logs for any errors or warnings that might indicate why the scheduler is still running. This can provide insights into whether there are underlying issues that need to be addressed.
  
  
  
  System Restart:
  
  In some cases, if the issue persists and you cannot identify the running process, a system restart may be necessary to clear any stuck processes.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the preselection scheduler for any specific recommendations or known issues.
  
  
  
  Contact SAP Support:
  
  If the problem continues and you cannot resolve it, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM50 (Process Overview), SM66 (Global Process Overview), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Check for any SAP Notes related to the preselection scheduler or the specific error message for additional guidance or patches.
  System Performance: Ensure that your system has adequate resources (CPU, memory) to handle the processes, as performance issues can sometimes lead to processes hanging.
  
  By following these steps, you should be able to resolve the CNV_PE_SEL041 error and successfully run the preselection scheduler.