Which UME attribute is the real userid in the SAP Logon Ticket?

Hi,

in the datasource.xml files you can assign userid, loginid, j_user and logonalias to a LDAP attrribute (samaccoutname for instance). Which one is actually the one that is inserted into the SAP Logon Ticket? I've been playing around by changing it and my guess is that it is the j_user but what is the purpose of the other possible attributes then?

Much obliged

Marcel Rabe