Message type: E = Error
Message class:  CNV_LTHCM_S_10 - LT HCM: Message Class for Data Selection 
Message number: 187
Message text: &1 non-HCM and non-basis system tables found
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The SAP error message CNV_LTHCM_S_10187 indicates that during a conversion or migration process, the system has detected tables that are neither HCM (Human Capital Management) related nor part of the basis system. This typically occurs in the context of data migration projects, especially when using the SAP Landscape Transformation (SLT) or other data migration tools.
Cause: The error arises when the migration tool identifies tables in the source system that do not belong to the expected categories (HCM or basis). This can happen due to: Incorrect Source System Configuration: The source system may have custom tables or third-party application tables that are not recognized as part of the HCM or basis categories. Data Model Mismatch: The data model in the source system may not align with the expected data model in the target system. Inclusion of Unrelated Data: The migration process may inadvertently include tables that are not relevant to the HCM migration.
Solution: To resolve this
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