Business Table Rules vs SAP BPC defined rules
I am creating a demo for LEGAL consolidation in SAP BPC 5.1. I am going through the documentation to understand the basic difference between Business Table Rules (configuring the right business rule tables and running the stored procedure) and SAP BPC defined rules (calling just ICElim.LGF for IC Elimination or FXTrans.LGF for foreign currency translation).
For some reason, it feels that just calling the defined rules in .LGF file is easy from "setting properties for dimension" point of view. However when I try to do these things using business rules, it seems that it needs more properties to set up and needs a lot more understanding on setting up the business rules.
Is it that the ICEliim.LGF and FXTrans.LGF are used for simple scenarios vs. business rules for complex scenarios?