Question on SSO deep linking

I have set up SSO for many applications/vendors via the F5 APM. We have a new one that needs deep linking. The URL to the site would be something similar to https://serviceproviderURL.com/custom/login/saml/login.action?assetid=1. There are multiple assetids. Does anyone know how the deep linking would be handled? Would this be in the relay state of the service provider connector? Do I have to account for all asset IDs? Any help would be greatly appreciated. Thank you.