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
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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
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