Small, independent demands for components and subassemblies typically arise from which of the following sources?

Independent demand for components and subassemblies is not tied to the demand of a higher-level item. These typically come from repair, maintenance, and service activities, where components are needed on their own rather than as part of a finished product.

“Independent demand... includes service/replacement parts and maintenance repair operating supplies.”

— CPIM MRP Module C1-5