Section: 5.2.3.3.3 Nudm_SDM_Notification service operation
Content: Service or service operation name: Nudm_SDM_Notification Description: The UDM notifies NF consumer of the updates of Subscription Data indicated by the "subscription data Type" input and additional UDM-related parameters. Inputs, Required: Subscription data type(s), Key for each Subscription data type(s). Inputs, Optional: None. Outputs, Required: Result Indication. The UDM invokes this service operation under the following cases: - When the subscription data is updated at the UDM, the updated subscription information is notified to the serving NF that has subscribed for the specific subscription data type to be notified. - When the UDM needs to deliver Steering of Roaming information to a UE. - When the UDM needs to deliver UDM Update Data to a UE (e.g. a new Routing Indicator or Default Configured NSSAI to the UE). If the updated subscription information is related to session management the subscriber data may contain e.g. Allowed PDU Session Type(s), Allowed SSC mode(s), default 5QI/ARP. Outputs, Optional: Redirection information. If the NF consumer is AMF and if the result of the service operation fails, AMF shall set corresponding cause value in result indication which can be used by the UDM for further action. If the related UE is not served by the AMF and the AMF knows which AMF is serving the UE, the AMF provides redirection information which can be used by the UDM to resend UE related message to the AMF that serves the UE.