When I set it to 'Technical User', it worked. When I changed it to SSO user, I do not get an error immediately. But the next day, when I log on , I get this error.
To answer your question, it has not worked after I changed it to SSO (and we have restarted our system after changing it to SSO)
As per the OSS note, that I had indicated earlier, I used the "Current user (assertion ticket)".
I am now trying to set my Sessionexpiration to same as SSO expiry.