OAuth 2.0 Device Authorization Grant

Getting advice
7

Docker server version 23.0.7
I am receiving 405 on the “Device Authorization Endpoint” with or without the client authorization. I can’t find any reference to “Access Type”.

curl -X POST \
    -d "client_id=osint-client" \
    "http://localhost:9080/realms/osint-realm/protocol/openid-connect/device/auth"

I would also like to confirm whether the client device is a 1-1 or 1-Many association.

image