Hello! I had a problem with the remote-api and the function client_add. Everytime I called the function, the return value was 0. In the script /usr/local/ispconfig/interface/lib/classes/remoting.inc.php is a small bug. The lin with PHP: $insert_id = $app->db->insertDB(); is coming to late. The line must be after this one PHP: $app->db->query($sql); Than the returned id is not empty!