How To Fix CNV_MBT353 - Max.Jobs = 0. Activity start was not possible!

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 353

• Message text: Max.Jobs = 0. Activity start was not possible!

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT353 - Max.Jobs = 0. Activity start was not possible! ?

  The SAP error message "CNV_MBT353 Max.Jobs = 0. Activity start was not possible!" typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is unable to start a job because the maximum number of jobs allowed is set to zero.
  Cause:
  
  Configuration Issue: The maximum number of jobs (Max.Jobs) has been set to zero in the configuration settings. This means that no jobs can be executed.
  System Parameters: There may be system parameters or settings that limit the number of concurrent jobs that can be run.
  Authorization Issues: The user may not have the necessary authorizations to start jobs or activities.
  Technical Issues: There could be underlying technical issues with the job scheduling or background processing in the SAP system.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the relevant configuration settings for the migration or conversion process.
  Look for the parameter Max.Jobs and ensure it is set to a value greater than zero. This can usually be found in the transaction code related to the migration cockpit or the specific tool you are using.
  
  
  
  Adjust System Parameters:
  
  If you have access, check the system parameters related to job scheduling. You can use transaction RZ10 to view and modify profile parameters.
  Ensure that the parameters related to background processing and job scheduling are correctly set.
  
  
  
  User Authorizations:
  
  Verify that the user executing the job has the necessary authorizations to start jobs. Check the roles and authorizations assigned to the user.
  
  
  
  Restart Background Processing:
  
  If there are issues with background processing, you may need to restart the background processing system. This can sometimes resolve temporary issues.
  
  
  
  Check Logs:
  
  Review the logs for any additional error messages or warnings that might provide more context about the issue. You can check the job logs in transaction SM37.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation or notes related to the specific migration or conversion tool you are using for any additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), RZ10 (Profile Parameters), and the specific transaction for the migration tool you are using.
  SAP Notes: Search for SAP Notes related to the error message or the migration tool for any known issues or patches.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to resolve the error and successfully start the activity.