A. The department shall have the power to designate the property that shall constitute a production unit; provided, a production unit shall be a unit of property from which products of common ownership are severed.
B. The department shall compile and keep current an index of all production units by description sufficient to properly identify such production units.
C. The department shall assign to each production unit a number or symbol, and the number or symbol shall serve as a means of identification for the purpose of reporting, tax payment and tax collection of the taxes administered by the department.