How To Fix CNV_OM_PRESEL134 - Reset currently not possible - scheduler must be stopped or finished

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM_PRESEL - Messages for LT Object Based Preselection

• Message number: 134

• Message text: Reset currently not possible - scheduler must be stopped or finished

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_OM_PRESEL134 - Reset currently not possible - scheduler must be stopped or finished ?

  The SAP error message CNV_OM_PRESEL134 indicates that a reset operation cannot be performed because the scheduler is either still running or has not yet completed. This error typically occurs in the context of data migration or conversion processes, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or other conversion tools.
  Cause:
  
  Scheduler Running: The most common cause of this error is that a background job or scheduler related to the data migration process is currently active. This means that the system is still processing data, and a reset cannot be executed until the job is completed or stopped.
  Incomplete Process: If the migration process was interrupted or is still in progress, the system will not allow a reset to ensure data integrity and consistency.
  
  Solution:
  
  
  Check Scheduler Status: 
  
  Go to transaction SM37 in SAP to check the status of background jobs. Look for any jobs related to the migration process that might be running.
  If you find any jobs that are still running, you may need to wait for them to complete or, if necessary, stop them.
  
  
  
  Stop the Scheduler: 
  
  If you determine that the job is stuck or needs to be stopped, you can do so from the SM37 transaction. Select the job and choose the option to cancel or stop it.
  Ensure that you have the necessary authorizations to stop background jobs.
  
  
  
  Retry the Reset: 
  
  Once the scheduler has been stopped or has completed its tasks, you can attempt the reset operation again.
  
  
  
  Check Logs: 
  
  If the issue persists, check the logs for any additional error messages or warnings that might provide more context about what is causing the scheduler to run or why the reset cannot be performed.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SM21 (System Log), and SLG1 (Application Log) to troubleshoot further.
  Documentation: Review SAP documentation related to the specific migration tool you are using, as there may be specific guidelines or prerequisites for performing resets.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  If you continue to experience issues after following these steps, consider reaching out to SAP support for further assistance.