Section: 6.3.1A.5 Abnormal cases in the UE
Content: The following abnormal case can be identified: a) Collision of UE-requested PDU session release procedure and a service-level authentication and authorization procedure. When the UE receives a SERVICE-LEVEL AUTHENTICATION COMMAND message during the UE-requested PDU session release procedure, and the PDU session indicated in SERVICE-LEVEL AUTHENTICATION COMMAND message is the PDU session that the UE has requested to release, the UE shall ignore the SERVICE-LEVEL AUTHENTICATION COMMAND message and proceed with the UE-requested PDU session release procedure.