ERROR::Filter:::doFilterSSOException: --Service URL not found:session

i am trying to create a token for authentication of the client user id and password using sun access manager,but i am getting the error that services url not found:session,here token is locally check before the session service is called.and creating the token from the cookie string and not from the httpServletRequest,Any body help me out any help should be appreciate

[376 byte] By [129567] at [2007-11-26 10:38:17]