Use custom login page to POST to login.fcc with SecureURLs=yes.
If this is not setup correctly, webagent trace will log the following error:
[CSmHttpPlugin::ProcessResource][Error. Unable to handle request in Secure mode.]
With SecureURLs enabled, Web Agent encrypts all SiteMinder query parameters (e.g: smagentname, target) in a redirect URL, further securing Agent interactions. All the query parameters are grouped into a single query parameter called SMQUERYDATA.
You can use the OOTB login.fcc. However, if you are using custom FCCs, you must add the smquerydata directive along with other FCC directives, such as TARGET to the custom FCC.
< >Customize custom login page (ASP/ JSP page) to extract the SMQUERYDATA from the redirect response, append the SMQUERYDATA to the subsequent POST request as query string and as POST data.
HTTP Header trace will capture the POST data and request redirections. The trace will help to identify the failing point within the login process.