Ошибка "Вы не можете снять эту заявку"

double count_time_diff(std::chrono::time_point<std::chrono::system_clock> t)
{
   auto end = std::chrono::system_clock::now();
   std::chrono::duration<double> elapsed_seconds = end - t;

   return elapsed_seconds.count();
}

bool deleteOrder(Symb_data params, int order_num, bool is_stopOrder, lua_State *L)
{
   lua_settop(L, 0);

   bool ans = false;

   Ttransaction T(L, params);

   int trans_id = T.trans_id();
   T.classcode();
   T.seccode();

   if (is_stopOrder)
   {
      T.action(order_Action::KILL_STOP_ORDER);
      T.stop_order_key(order_num);
   }
   else
   {
      T.action(order_Action::KILL_ORDER);
      T.order_key(order_num);
   }

   std::string res = sendTransaction(T);

   if (res.compare("") == 0)
   {
      ans = true;
      auto doLoop = [&]()
      {
         bool ans = false;
         std::vector<OrderData> orders;
         if (get_Orders_Info(orders, params))
         {
            for (size_t i = 0; i < orders.size(); i++)
            {
               if (orders[i].trans_ID == trans_id)
               {
                  ans = true;
                  break;
               }
            }
         }
         return ans;
      };
      auto start = std::chrono::system_clock::now();
      while (count_time_diff(start) <= 30 && doLoop())
      {
         Sleep(1);
      }
      if (doLoop())
         ans = false;
   }
   else
   {
      res = "Ошибка удаления ордера:\n " + res;
      msg_ToQuik(L, res, 3);
   }

   return ans;
}