Can anyone clarify my doubt In UMTS RRC messages, all messages having UE identity or not?
What do u mean by UE identity i.e. IMSI/MSISDN or RNTIs.
Whatever be the case check ACTIVE SET UPDATE COMPLETE it does not have any UE Identity at all, it has transaction identifier there are many similar cases please check 25.331 Rel 10 RRC Spec.