NRF Management Services
The NRF Management (Nnrf_NFManagement) service enables the NF instances in the serving PLMN to register, update, or deregister their profiles in the NRF. The NF instance described here is the UPF StarOS based instance.

Presently, the Nnrf_NFManagement service provides the following operations:
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Register NF instance (NFRegister)—An NF instance registers its profile in the NRF along with the list of services that it provides.
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Update NF instance (NFUpdate)—An NF instance partially updates or replaces the NF profile parameters in the NRF. It also adds or deletes the services that it provides.
Currently, NFUpdate supports the following operations:
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Update of NF profile attributes
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Heartbeat of NF
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De-register NF instance (NFDeregister)—An NF instance deregisters its NF profile and the services that it provides in the 5G network.