If an error occurs during workflow processing, the present invention interrupts job processing appropriately while dispersing a load to the devices. When executing a plurality of processing steps with a plurality of devices in accordance with workflow setting information that defines the sequence of processing, a workflow execution method of the present invention includes the steps of: interrupting the processing step being executed when an error occurs in a first device; searching the workflow setting information including the processing step in the first device in which the error has occurred; specifying a second device in which another processing step included in the searched workflow setting information is executed; giving a notification that the error has occurred in the first device to the second device; restarting the interrupted processing step when the first device is recovered; and giving a notification that the first device has recovered to the second device.
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