NGAP/NAS/REST EP Error Handling

NGAP Error Handing

Mandatory IE's presence and length checks is done for NGAP message validation.

NAS Error Handling

Mandatory IE's presence and length checks is done for NAS message validation. In Conditional IE's, only uplink messages are handled.

REST Endpoint Error Handling

REST Endpoint: Validation of incoming inbound request message from UDM (DeRegData) and SMF (N1N2MsgTransferReqData, AssignEbiData and SmContextStatusNotification) is done towards AMF only on REST-EP.

AMF looks up for the presence and validates syntax and semantic errors of mandatory/conditional attributes in inbound request messages. In case, any optional attributes are present, then AMF performs syntax and semantic error handling.