Section: 4.23.6.3 Reporting UP path change to the AF
Content: Figure 4.23.6.3-1 shows procedures related Reporting UP path change to the AF. Figure 4.23.6.3-1: Reporting UP path change to the AF 1a. I-SMF indicates that UP path change may occur for the PDU Session via Nsmf_PDUSession_Update Request as described in clause 4.23.9; the SMF responds to the I-SMF. 2. If early notification has been requested by a PCC rule on behalf of AF as described in clause 4.3.6.2, then the SMF notifies the AF accordingly by invoking Nsmf_EventExposure_Notify service operation as described in clause 4.3.6.3. In this case the SMF may wait for further instructions of the AF. 3. SMF initiates Nsmf_PDUSession_Update Request with N4 information to control the local PSA and ULCL/BP as described in clause 4.23.9. 4. I-SMF enforces the change of DNAI or addition, change, or removal of UPF as described in clause 4.23.9. 5 I-SMF answers back to the Nsmf_PDUSession_Update from the SMF. 6. If late notification has been requested by a PCC rule on behalf of AF as described in clause 4.3.6.2, then the SMF notifies the AF accordingly by invoking Nsmf_EventExposure_Notify service operation as described in clause 4.3.6.3.