Question: In the context of the Nhss_ImsSDM_Get service operation in an IP Multimedia Subsystem (IMS), what is an additional authorization basis the Home Subscriber Server (HSS) may use when the requested data is specifically Repository data?
Option 1: NF Type
Option 2: IMS Subscriber Data Type(s)
Option 3: Key for each IMS Subscriber Data Type(s)
Option 4: Service Indication
Explanation: When the requested data is Repository data in the Nhss_ImsSDM_Get service operation, besides checking if the NF consumer is authorized to fetch the data, the HSS may also use the Service Indication as an additional basis for authorization. This ensures a more granular control over access to repository data based on the specific service being requested.