In series 4 of the Excel Add-in, to sign in with single sign-on (SSO), you must provide the correct SSO Friendly URL.
Your SSO Friendly URL is specific to your company. For example:
https://sdp.anaplan.com/frontdoor/saml/customersaml
To identify your SSO Friendly URL, contact whoever is responsible for configuring SSO at your company. For example, the IT department or tenant administrator. If you do not know who your tenant administrator is, contact Support.