Section: 4.18.2.1 PFD management triggered by AF
Content: Figure 4.18.2.1-1 procedure for PFD management via NEF (PFDF) triggered by AF 1. The AF invokes the Nnef_PFDManagement_Create/Update/Delete service. The Allowed Delay is an optional parameter. If the Allowed Delay is included, it indicates that the list of PFDs in this request should be provisioned within the time interval indicated by the Allowed Delay to the SMF(s) that have subscribed to the PFD management service using Nnef_PFDManagement_Subscribe service operation. 2. NEF checks whether the AF is authorized to perform this request and NEF (PFDF) checks if the AF is authorised to provision this PFD data based on the operator policies. Besides the information from the AF, the NEF may subscribe to the NWDAF to receive PFD Determination analytics defined in clause 6.16.3 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. 3. The NEF (PFDF) invokes the Nudr_DM_Create/Update/Delete (Application Identifier, one or more sets of PFDs, Allowed Delay) to the UDR. 4. The UDR updates the list of PFDs for the Application Identifier. 5. The UDR sends a Nudr_DM_Create/Update/Delete Response to the NEF (PFDF). 6. The NEF sends Nnef_PFDManagement_Create/Update/Delete Response to the Application Function.