Upon registration of such document data that a general affairs department issues a request to print out the document data to a sales department, the document data is registered in a billing management box designated as a registration destination in an MFP allocated to the sales department. The MFP adds a department ID of the general affairs department which is authentication information at this operation, as billing destination information, to the document data. When the general affairs department sets an upper limit of printout of the print data, an upper limit value counter is added to the document data. When the general affairs department issues a request of notification, a fact that the document data is registered is displayed on a panel of the MFP allocated to the sales department; thus, the sales department receives the notification.