How To Fix CNV_NCE_BAS120 - Initialization of number range mapping values started in background

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 120

• Message text: Initialization of number range mapping values started in background

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_NCE_BAS120 - Initialization of number range mapping values started in background ?

  The SAP error message "CNV_NCE_BAS120 Initialization of number range mapping values started in background" typically relates to the number range mapping process in the context of data migration or conversion projects, particularly when using SAP's Conversion Tools (like SAP S/4HANA Migration Cockpit or other data migration tools).
  Cause:
  
  Background Job Initialization: This message indicates that the initialization of number range mapping values has been triggered to run in the background. This is a normal process when the system is preparing to map number ranges for data migration.
  Long-running Process: The process may take some time, especially if there are a large number of records to process or if the system is under heavy load.
  Configuration Issues: There may be issues with the configuration of number ranges or the mapping settings that could lead to delays or errors in the process.
  
  Solution:
  
  
  Check Background Job Status: 
  
  Go to transaction code SM37 to check the status of the background job. Look for jobs related to number range mapping and see if they are still running, completed, or if they have failed.
  
  
  
  Review Job Logs: 
  
  If the job has failed, review the job logs for any specific error messages that can provide more insight into what went wrong.
  
  
  
  Increase System Resources: 
  
  If the job is taking too long, consider increasing system resources (CPU, memory) or running the job during off-peak hours to improve performance.
  
  
  
  Configuration Review: 
  
  Ensure that the number range mappings are correctly configured. Check the settings in the relevant customizing transactions (like SNRO for number ranges) to ensure that they are set up correctly.
  
  
  
  Re-run the Process: 
  
  If the job has failed or if you made changes to the configuration, you may need to re-run the initialization process. This can often be done through the relevant transaction or program.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or notes related to the specific migration tool you are using for any additional troubleshooting steps or known issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues with number range mapping or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the CNV_NCE_BAS120 error message.