How To Fix CNV779 - Creation of indexes has already been scheduled by another job

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 779

• Message text: Creation of indexes has already been scheduled by another job

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV779 - Creation of indexes has already been scheduled by another job ?

  The SAP error message "CNV779 Creation of indexes has already been scheduled by another job" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is already a job scheduled to create indexes for the same database table, which prevents the current job from proceeding.
  Cause:
  
  Concurrent Jobs: The most common cause is that another job is already running or has been scheduled to create indexes for the same table. This can happen if multiple migration or data processing jobs are initiated simultaneously.
  Job Overlap: If a previous job did not complete successfully or is still in progress, it can lead to this error when a new job attempts to create indexes for the same table.
  System Configuration: In some cases, system settings or configurations may lead to jobs being scheduled inappropriately.
  
  Solution:
  
  Check Job Status: Use transaction code SM37 to check the status of background jobs. Look for any jobs related to index creation that might be running or scheduled. If you find a job that is still running, you may need to wait for it to complete.
  Cancel or Delete Jobs: If you find that a job is stuck or has failed, you can cancel or delete it from the job overview in SM37. Be cautious when doing this, as it may affect data integrity or migration processes.
  Reschedule the Job: After ensuring that no other jobs are running for index creation, you can reschedule the job that encountered the error.
  Review Job Scheduling: If this issue occurs frequently, review the scheduling of jobs to ensure that they do not overlap. Consider implementing a job scheduling strategy to avoid conflicts.
  System Logs: Check system logs for any additional information or errors that may provide context for the issue. Use transaction SLG1 to view application logs related to the migration process.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SLG1 (Application Log), and SE38 (ABAP Program Execution) for managing jobs and logs.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review SAP documentation related to the migration process you are using, as it may contain specific guidelines for handling index creation and job scheduling.
  
  By following these steps, you should be able to resolve the error and proceed with your data migration or conversion tasks.