Section: 5.2.26.2.3 Nupf_EventExposure_Subscribe service operation
Content: Service operation name: Nupf_EventExposure_Subscribe Description: This service operation is used by an NF to subscribe or modify a subscription to UPF event exposure notifications e.g. for the purpose of UPF data collection on a specified PDU Session or for all PDU Sessions of one UE or any UE. Input, Required: NF ID, Target of Event Reporting, (set of) Event ID(s) defined in clause 5.2.26.2.1, Notification Target Address (+ Notification Correlation ID), Event Reporting Information defined in Table 4.15.1-1. Input, Optional: Subscription Correlation ID (in the case of modification of the event subscription), Expiry time, DNN, S-NSSAI, Application ID(s), traffic filtering information, Type of measurement, granularity of measurement, Reporting suggestion information. Output, Required: When the subscription is accepted: Subscription Correlation ID (required for management of this subscription), Expiry time (required if the subscription can be expired based on the operator's policy). Output, Optional: First corresponding event report is included, if available (see clause 4.15.1). Notification Target Address (+ Notification Correlation ID) is used to correlate Notifications sent by UPF with this subscription.