Question: In which scenario is the "Allowed PDU Session Status" Information Element (IE) included in the CONTROL PLANE SERVICE REQUEST message?
Option 1: When the UE is transitioning from a 3GPP to a non-3GPP access network.
Option 2: When the UE is establishing a new PDU session using 3GPP access.
Option 3: When the CONTROL PLANE SERVICE REQUEST message is sent as a response to paging with the access type indicating non-3GPP access or notification via 3GPP access for PDU session(s) associated with non-3GPP access.
Option 4: When the UE is releasing an existing PDU session.
Explanation: The "Allowed PDU Session Status" IE is included in the CONTROL PLANE SERVICE REQUEST message when it is sent as a response to paging with specific conditions, such as non-3GPP access or notification via 3GPP access for PDU sessions associated with non-3GPP access. This ensures that the network and UE are aware of the allowed PDU session status in these scenarios.