ErrorAccessDenied 4.1.2.1, 4.2.2.1.

ErrorInvalidClient 5.2.

ErrorInvalidGrant 5.2.

ErrorInvalidRequest 4.1.2.1, 4.2.2.1, 5.2.

ErrorInvalidScope 4.1.2.1, 4.2.2.1, 5.2.

ErrorServerError 4.1.2.1, 4.2.2.1.

ErrorTemporarilyUnavailable 4.1.2.1, 4.2.2.1.

ErrorUnauthorizedClient 4.1.2.1, 4.2.2.1, 5.2.

ErrorUnsupportedGrantType 5.2.

ErrorUnsupportedResponseType 4.1.2.1, 4.2.2.1.

TokenTypeBearer NOTE: token types are case-insensitive.

TokenResponse is used on successful authorization.