A. Use the table VT510 (TARIF table).
This table defines pay scale groups and levels. It is used for validation after the pay scale type and area have already been determined, not for defaulting them.
B. Use table V001PC (Check Assignment of Pay Scale Structure to Enterprise Structure) if you do NOT use the TARIF feature.
This table assigns a pay scale structure to a personnel subarea. While it can be a fallback, the LGMST feature is the primary, more powerful tool for defaulting these values dynamically.
C. Use table V503 G (Define employee subgroup grouping for primary wage type).
This configuration is used to group employee subgroups for wage type permissibility and other settings, not for defaulting the pay scale structure (type and area) in IT0008.