Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 289
Message text: G/L account and cost element fields and domains excluded from conversion
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The SAP error message CNV_20100289 indicates that certain G/L account and cost element fields and domains have been excluded from the conversion process during a data migration or system upgrade. This error typically arises in the context of SAP's data migration tools, particularly when using the SAP S/4HANA Migration Cockpit or other conversion tools.
Cause: Field Exclusion: The error suggests that specific fields related to G/L accounts and cost elements are not included in the conversion mapping. This could be due to: The fields not being relevant for the target system. The fields being incorrectly configured in the source system. Missing or incorrect mapping in the conversion settings. Data Incompatibility: The data types or structures of the G/L accounts and cost elements in the source system may not match those expected in the target system.
Configuration Issues: There may be configuration settings in the source or target system that prevent certain fields from being converted.
Solution: Review Mapping Settings:
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