Section: 5.6.3.5 Abnormal cases on the UE side
Content: The following abnormal cases can be identified: a) NOTIFICATION message received via non-3GPP access with access type indicating 3GPP access when UE-initiated 5GMM specific procedure or service request procedure over 3GPP access is ongoing. The UE shall proceed with 5GMM specific procedure or service request procedure. If for registration procedure and service requestprocedure lower layers indicate that the access attempt is barred, then the UE shall handle the pending NOTIFICATION message as specified in subclause 5.6.3.2. Otherwise, the UE shall ignore the NOTIFICATION message once lower layers confirms the establishment of the signalling connection.