AM Policy Subscription Call Flow
This section describes the AM Policy Subscription call flow .

Step |
Description |
---|---|
1 |
The AMF sends a Npcf_AmPolicyControl_Create request to the PCF. |
2 |
If the UDR URL is not configured, the PCF sends the Nnrf_NFDiscovery request is sent to NRF. |
3 |
In response, the NRF sends the Nnrf_NFDiscovery results to the PCF. |
4 |
The PCF sends the Nudr_DataRespository query to the UDR. |
5 |
In response, the UDR sends the repository details to the PCF. |
6 |
The PCF sends the Npcf_AmPolicyControl_Create request to the AMF. |
7 |
The PCF sends the Nudr_DataRepository query to the UDR. |
8 |
The UDR responds to PCF with the repository information. |
9 |
After PCF evaluates the response, if the policy has modified, then the PCF sends the Npcf_AmPolicyControl_UpdateNotify request to the AMF. |
10 |
The AMF sends the Update Notification as a response to the PCF. |