PROBLEM TO BE SOLVED: To update an environmental map in real time, which is used by an unmanned carrier, on the basis of warehousing/shipping information of a warehouse management system, and enhance the environmental map in accuracy.SOLUTION: An interlocking system is equipped with a WMS (warehouse management system) 10 which comprises at least a data base for storing data concerning the stock state of a warehouse and a stock control computer 11 for indicating the data concerning the stock state and warehousing/shipping of a cargo to or from the warehouse to a carrier. The interlocking system comprises, as the carrier, at least one unmanned carrier 20 which moves using an environmental map 24, warehouses and ships the cargo, and a map management part 31 for updating map information of the environmental map 24 on the basis of stock updating information on the warehouse. When warehousing by the unmanned carrier 20, the unmanned carrier 20 measures the shape and position of the cargo which oneself places, and r
