Patent attributes
The invention proposes a method for devising a production plan of a product to be produced through multiple production steps having different characteristics in a supply chain across multiple companies and/or multiple factories. The method divides a production step of the product into multiple production steps in advance based on a constraint to be considered when the production plan therefor is devised, defines identifiers for the multiple production steps, prestores the defined identifiers in a storage portion as step identification information, and prestores step information having at least correspondences between the production steps and items. In this case, a calculation processing portion identifies and determines production steps and order of calculations, which are involved in the production of the product, based on the shipping plan information, parts table and step information stored in the storage portion, determines which of first and second production plan calculation algorithms is to be executed based on the order of calculations and based on the step identification information stored for each production step, and calculates the production plan by using the determined algorithm.
