How to pass parameter from RP to IDP in passive flow?

Anand AV 96 Reputation points


We have multiple client's IDP federated with our ADFS 4.0 server.
A user click login from web application (RelyingParty ) then redirected to ADFS's IDP selection page and redirected to there respective IDP page.

Now my question is how to pass RelyingParty identifier("") to IDP.
I see wtrealm has the RPI but when ADFS redirects the request to IDP it changes the value to it's own identifier(

Can some one please help me on this?.


Active Directory Federation Services
Active Directory Federation Services
An Active Directory technology that provides single-sign-on functionality by securely sharing digital identity and entitlement rights across security and enterprise boundaries.
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  1. Pierre Audonnet - MSFT 10,121 Reputation points Microsoft Employee

    When using the IDP Initiated Flow for your application, you can use the LoginToRp query string to skip the drop down menu selection. For example: