Configuring SSO using LDAP (Urgent)

[udesh]

Hi,
  iam new to the cognos administration , currently iam facing an issue with SSO using LDAP

I have created 1 Custom java provider namespace and 1 LDAP namespace, The custom java provider uses the SDK and set the userId in REMOTE_USER variabale and set the LDAP namespace and redirects the request.
The request redirects and loads the login page instead of redirecting to the report specified in URL.

In the LDAP configuaration, I have provided the "Use external identity as "True"" , External Identity mapping as "(uid=${environment("REMOTE_USER")})" and userLookup as "(&(objectclass=person)) (mail=${userID})" with BIND user DN and Password.

SSO url = "http://XXXX/ServletGateway/gateway/servletgateway?reportname&CAMNamespace=CustomNamespace&userId=XXXXXX

Thanks