Проблема с определением группы пользователя

       if (!$USER->IsAuthorized()) {
            \Bitrix\Main\Loader::includeModule("catalog");
            \Bitrix\Main\Loader::includeModule("sale");

            $arGroups = CUser::GetUserGroup($order->getUserId());
            $isOptGroup = IsOptUser();
            if (true === $isOptGroup) {
                $basket = $order->getBasket();
                $basketItems = $basket->getBasketItems();
                $status = false;
                foreach ($basketItems as $item) {
                    $flag = false;
                    $price = CCatalogProduct::GetOptimalPrice((int)$item->getProductId(), 1, $arGroups);
                    $item->setFields([
                        'CUSTOM_PRICE' => 'Y',
                        'BASE_PRICE' => ($price['RESULT_PRICE']['BASE_PRICE']),
                        'PRICE' => ($price['RESULT_PRICE']['DISCOUNT_PRICE'])
                    ]);
                    $item->save();
                    $status = true;


                }
                if (true === $status) {
                    $order->doFinalAction(true);
                    $order->save();
                }
                $flag = true;
            }
        }

Array
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    [0] => 2
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Array
(
    [0] => 2
    [1] => 3
    [2] => 4
    [3] => 10
    [4] => 22
)