Hello,
The aim is to create our own provider with Keycloak, with one subtlety. In addition to the simple login/password, if the pairing is correct, the user should be redirected to a new page, or update the current one, with a suite that allows him to choose the company on which he wants to authenticate, from a list of companies linked to the user account in BDD, or if linked to a single company, connect him directly. A company value must therefore be added to the claims in the token.
Thank you