5.3.2 ADM Discovery and Selection

The ADM discovery and selection function is supported by the AIOTF to select an ADM instance to retrieve the AIoT Device Profile Data or update the last known AIOTF for the AIoT Device. The AIOTF may also discover and select an ADM to retrieve AF authorization data. Similarly, the NEF uses the ADM discovery and selection function to select an ADM to obtain the last known AIOTF for the AIoT Device.

When the ADM discovery is performed, the AIOTF or the NEF utilizes the NRF to discover the ADM instance(s) unless the ADM information is available by other means, e.g., locally configured. The AIOTF or the NEF selects an ADM instance based on the available ADM instances (obtained from the NRF or locally configured).

The following factors may be considered for the ADM discovery and selection for AIoT Device Profile Data retrieval or update:

• The Domain Information or the AIoT Device Permanent Identifier.

NOTE 1: Based on local configuration, the AIOTF or the NEF can determine whether to use the Domain Information or the AIoT Device Permanent Identifier.

NOTE 2: In case the Domain Information is empty, the AIOTF or the NEF uses AIoT Device Permanent Identifier for ADM discovery and selection.

The following factors may be considered for the ADM discovery and selection for AF authorization data retrieval:

• The AF ID.