title: Joomla Registration: User exists - E-mail exists
body: <p>how can I force Joomla to show the Error Messages that a username or e-mail exists already in the Database while registrating...</p>
  
  <p>When I try to register as a new user with an existing username or/and e-mail I'll be redirected to the completely filled out registration form without any error message or hint.</p>
  
  <p>Thanks</p>