SBI Message Validation

AMF performs the message validation for the SBI interfaces.

Handling of Inbound Request Messages

Action

Inbound Request Message

Lookup

  • Performs look up for the presence of mandatory or conditional attributes.

  • REST endpoint fills the appropriate cause code and sends to the peer NF when inbound message isn’t qualified.

  • REST endpoint doesn't forward the failure request process to the AMF-service pod.

Validation

  • Validates syntax and semantic errors in mandatory or conditional attributes.

  • REST endpoint fills the appropriate cause code and sends to the peer NF, when any failure of message parsing or decoding occurs.

  • REST endpoint doesn't forward the failure request process to the AMF-service pod.

Optional Attributes

  • Validates optional attributes in SBI messages.

  • Checks the syntax and semantic errors of optional attributes present in the SBI message.

  • REST endpoint ignores the validation of failed optional attributes and forwards the request to the AMF-service pod. The AMF-service pod handles the requested message as per the call model.

Note

Validation of incoming inbound request message from UDM, SMF, and SMSF to AMF is supported on the REST endpoint.