On 3/21/22, 4:33 AM, "users on behalf of Pierre Soundi via users" <users-bounces at shibboleth.net on behalf of users at shibboleth.net> wrote: > Is there a way to pass a query string parameter from the initial http request to the Idp ? There's a way to do anything if you do it yourself, but the SP doesn't support it, no. -- Scott