Business Model Calculations Based on Allocation Keys

Many times business analysts in lack of data from source systems create allocation keys and make estimations, reports, analysis or business cases.
Many times allocation schemes are not set up properly and only show lack of knowledge of coordinators who calculate required cases.
If the allocation schemes logic is quality enough it will be very transparent to information logic from the source systems, tracking closely the information logic structure. Good allocation keys of one or more key allocation lists is a good basis for any kind of implementation into IS. Poor allocation scheme can be good enough only for aggregated figures in excel table calculators. Good scheme is also strong basis for good specification of requirements from business to IT for implementation into IS.
Double check the logic of allocation keys with your analysts, it is your professional ID.