$transports = array();
Event::handle('GetImTransports', array(&$transports));
if (!in_array($type, array('email', 'sms')) && !in_array($type, array_keys($transports))) {
+ // TRANS: Server error for an unknown address type, which can be 'email', 'sms', or the name of an IM network (such as 'xmpp' or 'aim')
$this->serverError(sprintf(_('Unrecognized address type %s'), $type));
return;
}