PURPOSE: To reduce the burden of discharging work by inputting the coded name of a commodity to be unstocked so that requested parts and discharge reserving patterns are displayed and request signals are input from a discharge request device to a central control device in accordance with such a display.

CONSTITUTION: When discharging workers input the coded name of a commodity to be discharged to a keyboard 9a, a discharge control device 9 transmits the coded name of the commodity to a central control device 6. The central control device 6 searches whether the commodity is in stock or not and tells the discharge control device 9 if in stock. The discharge control device 9 displays transferred data on a CRT 9a. Through this display, a discharge request button for discharge request devices 8a, 8b... is depressed. The result is sent from the discharge control device 9 to the central control device 6, which drives a stacker crane ground control device 7. In this way, the burden of discharging work can be reduced.