An information processing system, which processes information based on setting information, having: a first apparatus; a second apparatus; and a management apparatus, wherein the first apparatus includes sections which transmit a first device information and a first setting information to the management apparatus; the management apparatus includes sections to store the information associated with the first device information; the second apparatus includes a section which transmits a second device information to the management apparatus, an section to inquire about the first setting information to the management apparatus, and a display; and the management apparatus further includes a processing section which specifies a difference between the first and the second device information, and modifies the first setting information according with the difference, and a section which transmits a modified first setting information, wherein the display section displays the result of the inquiry.