If a Table Property Description has attribute_code= EDCS_AC_INDEX_TO_LIBRARY and a corresponding cell value N, then the component_data_table_ecc must match the Nth Data Table data_table_type in the Data Table Library, unless N is sentinel for missing or excluded.
If we do not do this, then EDCS_AC_INDEX_TO_LIBRARY can only be used once in a table signature. EDCS_AC_INDEX_TO_LIBRARY should be treated in the same manner as component tables.