NRF Register/Discovery
The AMF supports register/de-register/update with NRF. The AMF includes various query parameters, such as nf-type, plmn-info, slice-data, DNN, routing-indicator when it sends the NFDiscovery request towards the NRF during discovery of network elements. When AUSF, UDM, PCF, and SMF aren't locally configured, the AMF queries the NRF NF discovery API to discover them.
The following feature is related to this use case: