Section: 14.3.2 Nnrf_AccessToken_Get Service Operation
Content: Service Operation name: Nnrf_AccessToken_Get. Description: NF Service Consumer requests NRF to provide an Access Token. Inputs, Required: the NF Instance Id of the NF Service Consumer, the requested "scope" including the expected NF service name(s). Inputs, Optional: PLMN ID (or SNPN ID) of the requester NF Service Consumer, PLMN ID (or SNPN ID)of the requested NF Service Producer, NF Instance Id(s) of the requested NF Service Producer, NF type of the expected NF Service Producer instance and NF Service Consumer, "additional scope" information (i.e. requested resources and requested actions (service operations) on the resources), list of NSSAIs or list of NSI IDs for the expected NF Service Producer instances, NF Set ID of the expected NF Service Producer instances, list of S-NSSAIs of the NF Service Consumer. Outputs, Required: Access Token with appropriate claims, where the claims shall include NF Instance Id of NRF (issuer), NF Instance Id of the NF Service Consumer potentially appended with its PLMN ID (or SNPN ID) (subject), NF type of the NF Service Producers or NF Instance Id or several NF Instance Id(s) of the requested NF Service Producer, potentially appended with PLMN ID (or SNPN ID) (audience), expected service name (scope), optionally "additional scope" information (allowed resources and allowed actions (service operations) on the resources) and expiration time (expiration), may include list of NSSAIs or NSI IDs for the expected NF Service Producer instances, and may include the NF Set ID of the expected NF Service Producer instances. Outputs, Optional: None.