Hi, please check
1) SSO is configure properly. pls note that when we execute Tcode -DBACOCKPIT the Webgui is working properly without asking user id/pass.
But the Tcode "SOLMAN_WORKCENTER" is asking user id/pass again.
2) The login/create_sso2_ticket is set ?
3) Please refer Note 1121248 - SSO Setup for Diagnostics