Process model management system and process model management method

A process model management method executed by a computer system including a processor and a storage device, wherein

• the storage device is configured to store actual data indicating actual performance of tasks executed at a manufacturing site and master data including design information on an order of tasks to be executed, and
• the process model management method includes
• a procedure for the processor to generate an actual process model including information on an execution order of the tasks based on the actual data,
• a procedure for the processor to generate a master process model including information on the execution order of the tasks based on the master data,
• a procedure for the processor to generate a synthetic process model that includes both information on the execution order of the tasks included in the actual process model and information on the execution order of the tasks included in the master process model,
• a procedure for the processor to, when the actual data is changed, detect a difference between a past actual process model generated based on the actual data before change and a new actual process model generated based on the actual data after change,
• a procedure for the processor to, when the master data is changed, detect a difference between a past master process model generated based on the master data before change and a new master process model generated based on the master data after change,
• a procedure for the processor to detect a difference between a past synthetic process model generated based on the actual process model and the master process model before the actual data and the master data are changed and a new synthetic process model generated based on the actual process model and the master process model after one of the actual data and the master data is changed, and
• a procedure for the processor to output a notification based on the detected difference.