Question: When is the T3512 value included by the Access and Mobility Management Function (AMF) in a registration procedure over 3GPP access?
Option 1: During a registration procedure when the 5GS registration type IE does not indicate "periodic registration updating".
Option 2: Only during the mobility and periodic registration update procedure.
Option 3: When the UE is in idle mode.
Option 4: Never, it's only used for non-3GPP access.
Explanation: The AMF includes the T3512 value IE during a registration procedure over 3GPP access when the 5GS registration type IE does not indicate "periodic registration updating", as specified in the protocol. This ensures that the UE's registration is properly managed and updated in the 5GS network.