How To Fix CNV_NCE_BAS046 - &1 &2 Target number for &3 already exists in &4

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 046

• Message text: &1 &2 Target number for &3 already exists in &4

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_BAS046 - &1 &2 Target number for &3 already exists in &4 ?

  The SAP error message CNV_NCE_BAS046 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is a conflict with the target number being used in the migration process. Specifically, it means that the target number for a certain object (like a business partner, material, etc.) already exists in the target system.
  Cause:
  
  Duplicate Entries: The target number you are trying to create or migrate already exists in the target system. This can happen if the data being migrated includes entries that conflict with existing data.
  Incorrect Mapping: There may be an issue with how the source data is mapped to the target data, leading to attempts to create duplicate entries.
  Data Preparation Issues: The data in the source system may not have been adequately cleaned or prepared, leading to duplicates.
  
  Solution:
  
  Check Existing Data: Before running the migration, check the target system for existing entries that may conflict with the data you are trying to migrate. You can do this by querying the relevant tables in the target system.
  Adjust Data Mapping: Review the mapping of source to target data. Ensure that the target numbers are unique and do not conflict with existing entries.
  Modify Source Data: If duplicates are found in the source data, you may need to modify or remove these entries before attempting the migration again.
  Use Different Target Numbers: If possible, adjust the target numbers in the migration file to ensure they are unique and do not conflict with existing entries.
  Consult Migration Logs: Review the migration logs for more detailed information about the error and the specific entries causing the conflict.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables for existing entries.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or solutions for this specific error message.
  Documentation: Review the SAP documentation related to the migration process you are using, as it may provide insights into common issues and best practices.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.