3.1.5.3.1.3 Processing Details
The steps performed by the OAuth 2.0 client to request device verification code, user code, and verification URIs are defined in [RFC8628] section 3.1 (Device Authorization Request).
Additionally, the OAuth 2.0 client MUST expect the AD FS server to respond with an error response according to the requirements of [RFC6749] section 5.2 (Error Response) with the error parameter of the response set to the server_error error code (defined in section 2.2.4.2).