Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 404
Message text: Target company code &1 contains not unique CJTRANS texts
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The SAP error message CNV_20200_CHECK404 indicates that there are non-unique CJTRANS texts in the target company code during a data migration or conversion process. This error typically arises in the context of SAP S/4HANA migrations or when using the SAP Conversion Tools.
Cause: The error occurs when the system detects that there are multiple entries in the CJTRANS table (which stores project-related transaction data) with the same text for a specific company code. This can happen due to: Duplicate Entries: There are duplicate records in the source data that are being migrated to the target system. Data Inconsistencies: The data in the source system may not have been cleaned or validated properly before migration.
Configuration Issues: There may be issues with how the project structures or texts are defined in the source system.
Solution: To resolve this error, you can follow these steps: Identify Duplicates: Use SQL queries or SAP reports to identify the duplicate CJTRANS texts in the
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