The Business Function specifies the type of activity or access offered by the Business Entity on the Product or Services though the Offering. The idea of standardizing business functions was first put to practice by the UNSPSC Business Functions Identifiers (UNSPSC BFI). We take their basic types of business functions as a starting point. Typical are sell, rental or lease, maintenance or repair, manufacture / produce, recycle / dispose, engineering / construction, or installation. Examples: A particular offering made by Miller Rentals Ltd. says that they (1) sell Volkswagen Golf convertibles, (2) lease out a particular Ford pick-up truck, and (3) dispose car wrecks of any make and model.