A management system including a management apparatus and a managed apparatus connected with each other by a communications network, the system having a registration controller, wherein in an initial registration phase where the managed apparatus sends a registration request notice to the management apparatus, and the management apparatus returns a registration permission notice to the managed apparatus; in cases where a first communications method is utilized that enables immediate mutual communication, the registration controller determines that a final registration has completed when the managed apparatus has received the registration permission notice; and in cases where a second communications method via a server is utilized, the registration controller determines that a temporary registration has completed when connection between the managed apparatus and the server has been established, and when the managed apparatus has acquired the registration permission notice, the registration controller determines that the final registration has completed.