Message type: E = Error
Message class:  CNV_LTHCM_S_10 - LT HCM: Message Class for Data Selection 
Message number: 156
Message text: For table &1 do not specify standard table group &2
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The SAP error message CNV_LTHCM_S_10156 typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that a specific table (denoted as &1) is not associated with a standard table group (denoted as &2) in the context of the migration or conversion process.
Cause: Missing Table Group Assignment: The table you are trying to process is not assigned to a standard table group in the system. This can happen if the table is custom or if the configuration for the migration process is incomplete.
Configuration Issues: There may be issues in the configuration settings for the data migration tool, leading to the system not recognizing the table as part of a standard group. Data Model Changes: If there have been changes in the data model or if the table structure has been modified, it may lead to this error.
Solution: Check Table Group
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