title: What entityId to choose to configure Service Provider (SP) in shibboleth?
body: <p>According to <a href="https://wiki.shibboleth.net/confluence/display/SHIB2/EntityNaming" rel="nofollow">Shibboleth wiki entity naming</a> we should not use real host to the entity id, I am confused what to use. Is there any significance of entity id, or I can choose whatever?</p>
  
  <p>What if I edit it after configured.</p>
  
  <p>my web path that will required sso is <code>http://exp.uni.edu</code>(this will get auth data from <code>http://uni.edu</code>) and the SP can be placed at <code>http://exp.uni.edu path</code>.</p>