The NGAP Message Reroute NAS Request should include a mandatory NGAP-Message Element. **ASN.1 Definition:** _RerouteNASRequest-IEs NGAP-PROTOCOL-IES ::= { {_ _ID id-RAN-UE-NGAP-ID CRITICALITY reject TYPE RAN-UE-NGAP-ID PRESENCE mandatory }| {_ _ID id-AMF-UE-NGAP-ID CRITICALITY ignore TYPE AMF-UE-NGAP-ID PRESENCE optional }| {_ **_ID id-NGAP-Message CRITICALITY reject TYPE OCTET STRING PRESENCE mandatory }| {_** _ID id-AMFSetID CRITICALITY reject TYPE AMFSetID PRESENCE mandatory }| {_ _ID id-AllowedNSSAI CRITICALITY reject TYPE AllowedNSSAI PRESENCE optional }| {_ _ID id-SourceToTarget-AMFInformationReroute CRITICALITY ignore TYPE SourceToTarget-AMFInformationReroute PRESENCE optional }, ... }_