Abstract: Methods and nodes related to subscription handling and notifications, for instance, with respect to Network Function (NF) management services, are described.

Abstract: A method for realizing a group-sending message service of the present invention is provided. The address information of a plurality of recipients assigned by a user is carried in a message body, and then a message application server finishes analyzing a group-sending flow directed to a plurality of users. The present invention further provides an apparatus for realizing the method and a system thereof. Since it needs performing communication between terminals and the server merely once, the network resource is saved. Because the group-sending address list is edited into the message body, it is more flexible for a user to assign destination recipients without being limited by the forms and numbers of recipients, and enriches the function of group-sending message service. Further, a provider can even supply a group-sending message to customers as a separate service, thus having a desirable commercial value.