Message type: E = Error
Message class:  CNV_LTHCM_S_10 - LT HCM: Message Class for Data Selection 
Message number: 279
Message text: &1 non-HCM and non-basis customizing tables found
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The SAP error message CNV_LTHCM_S_10279 indicates that during the conversion process, non-HCM (Human Capital Management) and non-Basis customizing tables were found in the system. This typically occurs in the context of a system conversion or upgrade, particularly when migrating from an older version of SAP to a newer one, such as from SAP ERP to SAP S/4HANA.
Cause: The error arises because the conversion process expects to find only HCM-related customizing tables, and the presence of non-HCM and non-Basis tables suggests that there may be customizations or configurations that are not compatible with the new system or that need to be addressed before proceeding with the conversion.
Solution: To resolve this error, you can follow these steps: Identify the Tables: Determine which non-HCM and non-Basis customizing tables are causing the issue. You can usually find this information in the detailed logs or messages associated with the error. Review Customizations: Analyze the identified tables to understand their
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