Update Notification Call Flow
This section describes the Update Notification call flow.

Step |
Description |
---|---|
1 |
When PCF must change the policy, it initiates an update notification by sending the Npcf_ AMPolicyControl_UpdateNotify request to AMF. |
2 |
The AMF responds to PCF with the confirmation indicating that update policy is enforced. |
3 |
In case the update policy enforcement was unsuccessful, the AMF redirects the subsequent notification to the new AMF. |
4 |
In case of 404 error, AMF responds to PCF stating that it must search for a new URI using the IPv4 or IPv6 address, or refrain from sends notifications to the original AMF. |