Problems in passing email as a parameter - are my SSO configurations correct?

Hi all, I have tasked my internal IT team to work with the supplier of an external platform to arrange a SSO solution, but they are having difficulty in getting this to work correctly - and unfortunately I am not a F5 expert. Can anyone provide some advice on this, or an example of a working solution? The basic setup is this: our F5 needs to be configured to pass authorisation, together with a user's email address, to an external platform from a portal access. We have achieved a connection without any parameter being passed, and we have also achieved login to the external platform by including an email address in the start URI, but getting the F5 to pass email address dynamically is proving difficult. Our current config is as follows:

 

Portal access

 

Link type: Application URI

 

Application URI:

 

SSO Configuration

 

Start URI: /auth/portal/getloginurl.php

 

Form method: POST

 

Form action: blank

 

Form parameter for username: "email_address"

 

As regards the form parameter, "email_address" is the fieldname expected by the external platform, and I would assume that this pulls from the username source configured on the same screen.

 

Does any of this config appear to be using the wrong convention, or have we put the wrong info in the wrong fields? I appreciate that setting up F5 SSO requires far more knowledge than I have, but any help would be much appreciated.

 

Ian