An image forming apparatus transmits, when a function which cooperates with a function providing apparatus is added, information on the added function to a management server, and changes a failure monitoring setting according to the returned monitoring condition. If a failure occurs, the image forming apparatus generates, if the failure is attributable to the function providing apparatus, failure information indicating that the failure is attributable to the function providing apparatus, and otherwise, the image forming apparatus generates failure information on the failure to transmit to the management server. Upon receiving the information on the added function from the image forming apparatus, the management server returns the monitoring condition corresponding to the added function to arrange for maintenance of the image forming apparatus. If the failure is attributable to the function providing apparatus, the management server does not arrange for maintenance of the image forming apparatus.