When canceling a print job in process of transfer, the user's load in accordance with a process for canceling the print job is reduced, and processes for actually deleting the print data in a printer and stopping a process for printing the print data are executed speedily. According to the present invention, the print data is received, it is analyzed whether or not predetermined information is included in the received print data, and the print job constructed by print data is canceled when the predetermined information is included as the analyzed result.