I have configured SAML as an authentication method and I am using it as a secondary factor after password validation. The external IDP that I'm using was designed for this flow and is able to parse a NameID from the AuthN request and then perform a second-factor only (rather than requiring the user to re-enter their username and password).
In reading the documentation, it doesn't seem that there is a way to include the subject in the an authn request.
1. Is there a configuration option that I maybe missed?
2. If not, is this a feature that could be added?