var requests=ins.getSystemRequests();
if (requests!==null) { return -1};
if (requests.length>0) { // check new a req
for (i=0;i<requests.length;i++) {
switch (requests[i].type) {
ins.deleteSystemRequests(requests[i]);
ins.deleteSystemRequests(requests[i]);
ins.deleteSystemRequests(requests[i]);
// undefined System Requests
ins.deleteSystemRequests(requests[i]);