The original URL contains query string parameters that need to be passed in the redirect to the backend URL.
For example:
The user is sent to "https://SiteA1.example.com/url?param1=true¶m2=false"
After authentication and authorization the user is redirected to "https://SiteB2.example.com/"
The "param1=true¶m2=false" portion needs to be read from the original URL and added to the backend URL.
Release : 12.8.06
Unfortunately, SiteMinder does not have the functionality to do this out of the box.