A production control system for producing products from parts, the
production control system, comprising: a product data obtaining module
configured to obtain product data including an effective surplus
production quantity from a parent product production location, which is a
location producing parent products using the products as their direct
parts; a part data obtaining module configured to obtain part data
including a surplus production quantity from a part production location
producing the parts; an effective surplus production quantity calculation
module configured to calculate an effective surplus production quantity
of a production department which produces the products from the parts
based on the effective surplus production quantity and the surplus
production quantity; and, a part data transmission module configured to
transmit part data including an effective surplus production quantity of
the production department to the part production location.