How To Fix CNV_NCE_BAS053 - &1 duplicate numbers were found

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 053

• Message text: &1 duplicate numbers were found

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_BAS053 - &1 duplicate numbers were found ?

  The SAP error message CNV_NCE_BAS053 indicates that there are duplicate numbers found in a specific context, typically related to number ranges or identifiers in the system. This error often arises during data migration or conversion processes, particularly when using SAP's data migration tools.
  Cause:
  
  Duplicate Entries: The most common cause of this error is the presence of duplicate entries in the data being processed. This could be due to incorrect data preparation or extraction processes.
  Number Range Overlap: If the system is trying to assign a number from a range that has already been used or is overlapping with another range, this can trigger the error.
  Data Migration Issues: During data migration, if the source data contains duplicates that are not handled properly, this error can occur.
  
  Solution:
  
  Identify Duplicates: Review the data set that is being processed to identify any duplicate entries. This can often be done using SQL queries or data analysis tools.
  Data Cleansing: Remove or consolidate duplicate entries in the source data before attempting the migration or conversion again.
  Adjust Number Ranges: If the issue is related to number ranges, ensure that the number ranges defined in the system do not overlap and are correctly configured.
  Use Unique Identifiers: Ensure that all entries have unique identifiers, especially if they are being migrated from another system.
  Check Migration Settings: Review the settings and configurations of the migration tool being used to ensure that it is set up to handle duplicates appropriately.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE16 or SE11 to check the relevant database tables for duplicates.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  Documentation: Review the documentation for the specific migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, LSMW) for best practices on handling duplicates.
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that no new errors arise during the migration process.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.