Question: What is the primary purpose of the Namf_Communication_N1N2TransferFailureNotification service operation in the 5G System (5GS)?
Option 1: To inform the NF service consumer that an N1 message was successfully delivered to the UE.
Option 2: To notify the NF service consumer that the AMF failed to deliver the N1 message to the UE due to a lack of response or a Reject Paging Indication from the UE.
Option 3: To request the NF service consumer to re-initiate an earlier Namf_Communication_N1N2MessageTransfer.
Option 4: To provide the NF service consumer with an estimated maximum wait time for the UE to respond to paging.
Explanation: The Namf_Communication_N1N2TransferFailureNotification service operation is used by the AMF to inform the NF service consumer that initiated an earlier Namf_Communication_N1N2MessageTransfer, that the AMF failed to deliver the N1 message to the UE due to a lack of response or a Reject Paging Indication from the UE. This notification allows the NF service consumer to take appropriate action in response to the failure.