Work-in-process management control method, work-in-process management control system, and non-transitory computer readable storage medium

A work-in-process management control system, comprising:

• a plurality of process devices each of which is configured to execute a corresponding process;
• a work-in-process shifting device configured to execute shifting of work-in-process among the plurality of process devices;
• a control device configured to control receipt of an out-of-process request from the plurality of process devices, and control the work-in-process shifting device to execute shifting of the work-in-process, wherein
• the control device receives, from first process devices that execute a first process among the plurality of process devices, an out-of-process request for the work-in-process;
• the control device determines whether a second process corresponding to the out-of-process request is a process subjected to control;
• in the case where the second process is not a process subjected to control, the control device controls the work-in-process shifting device to shift out the work-in-process in response to the out-of-process request;
• in the case where the second process is a process subjected to control, the control device determines whether a current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process;
• and
• in the case where the current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process, the control device controls the work-in-process shifting device to stop responding to the out-of-process request.

A non-transitory computer readable storage medium on which computer program instructions which enable a computer to execute a work-in-process management control method when being executed by the computer are stored, the work-in-process management control method comprising

• receiving, from first process devices that execute a first process, an out-of-process request for work-in-process;
• determining whether a second process corresponding to the out-of-process request is a process subjected to control;
• in the case where the second process is not a process subjected to control, shifting the work-in-process in response to the out-of-process request;
• in the case where the second process is a process subjected to control, determining whether a current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process;
• and
• in the case where the current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process, stopping responding to the out-of-process request.