Figure 16-7 shows that in the manufacturing process, there are two principal kinds of Material Movement concerned with manufacturing:
· Consumption – the use of an Asset, such as Inventory, a Lot, or a Discrete Item, or of an Asset Specification, such as “water”, or “natural gas”. This is charged to either a specific Maintenance Task, or a total Work Order.
· Product Completion – the production of an Asset, by either a particular Production Step or by the set of steps authorized by a Production Work Order.
Both of these sub-types inherit the attribute Quantity from their super-type Material Movement. In the case of Consumption, this is the quantity of material (either physical Asset or Asset Specification)