An information processing system, which includes one or more computers connected to an apparatus via a network, includes a reception part configured to receive a request addressed to a predetermined destination, a generation part configured to generate authority identification information for identifying operation authority to operate the apparatus, in response to reception of the request, a storage part configured to store the authority identification information generated by the generation part, and a transmission part configured to transmit the authority identification information to the transmission source of the request. The apparatus is configured to limit a value settable with respect to a setting related to a function of the apparatus, when the authority identification information stored in the storage part is input to the apparatus.