Создание заказа с подсчетом всех скидок

$ID = $_REQUEST["ID"];

	if($ID > 0 && \Bitrix\Main\Loader::includeModule("sale") && \Bitrix\Main\Loader::includeModule("catalog")) {
		$fuserId = CSaleBasket::GetBasketUserID();
		$arOrder = CSaleOrder::GetByID($ID);
		$dbBasketItems = CSaleBasket::GetList(
			array(
			    "NAME" => "ASC",
			    "ID" => "ASC"
			),
			array(
				'FUSER_ID' => $fuserId,
			    "ORDER_ID" => 'null'
			),
			false,
			false,
			array('ID')
		);
		while ($arItems = $dbBasketItems->Fetch())
		{
			CSaleBasket::Delete($arItems["ID"]);
		
		}

		$dbBasketItems = CSaleBasket::GetList(
			array(
			    "NAME" => "ASC",
			    "ID" => "ASC"
			),
			array(
			    "ORDER_ID" => $ID
			),
			false,
			false,
			array()
		);

		while ($arItems = $dbBasketItems->Fetch())
		{
			CCatalogProduct::Update($arItems['PRODUCT_ID'], array('QUANTITY' => 1));
			Add2BasketByProductID($arItems['PRODUCT_ID'], 1);
		}
		//$order = \Bitrix\Sale\Order::load($ORDER_ID);
		$order = \Bitrix\Sale\Order::create(SITE_ID, $arOrder["USER_ID"]);
		$order->setPersonTypeId($arOrder['PERSON_TYPE_ID']);
		$basket = \Bitrix\Sale\Basket::loadItemsForFUser(\Bitrix\Sale\Fuser::getId(), SITE_ID);
		$discounts = \Bitrix\Sale\Discount::buildFromBasket($basket, new \Bitrix\Sale\Discount\Context\Fuser($basket->getFUserId(true)));

		$shipmentCollection = $order->getShipmentCollection();
		$shipment = $shipmentCollection->createItem();

		// $service = \Bitrix\Sale\Delivery\Services\Manager::getById($arOrder['DELIVERY_ID']);
		// $shipment->setFields(array(
		//     'DELIVERY_ID' => $service['ID'],
		//     'DELIVERY_NAME' => $service['NAME'],
		// ));

		$paymentCollection = $order->getPaymentCollection();
		$payment = $paymentCollection->createItem();
		$paySystemService = \Bitrix\Sale\PaySystem\Manager::getObjectById($arOrder['PAY_SYSTEM_ID']);
		$payment->setFields(array(
		    'PAY_SYSTEM_ID' => $paySystemService->getField("PAY_SYSTEM_ID"),
		    'PAY_SYSTEM_NAME' => $paySystemService->getField("NAME"),
		));

		$res = $discounts->calculate();
		$order->setBasket($basket);
		$order->doFinalAction(true);
		$order->save();

		$ORDER_ID = $order->getId();

		if($ORDER_ID > 0) {
			$db_props = CSaleOrderPropsValue::GetOrderProps($ID);
			while ($arProps = $db_props->Fetch())
			{
				$arProps['ORDER_ID'] = $ORDER_ID;
				CSaleOrderPropsValue::Add($arProps);
			}

			LocalRedirect('/order/?ORDER_ID='.$ORDER_ID);
		}
	}