Sample attribute-map.xml file contains all attributes available from the MSU IdP. Not all attributes are available to all SP. For access to more attributes, please email identity@msu.edu. Include your SP entityID (found in shibboleth2.xml), a brief description of the service and which attributes are required.
To find out which attributes are being populated, first authenticate at http://hostname/Shibboleth.sso/Login or https if using SSL. After you have authenticated, http://hostname/Shibboleth.sso/Session will display the names of attributes returned to your SP.