Разные значения НДС по группам пользователей

Обработчики для изменения значения НДС при добавлении товаров в корзину, а так же при оформлении заказа ( два события )

AddEventHandler("sale", "OnBeforeBasketAdd", "myBeforeBasketAddHandler");
function myBeforeBasketAddHandler(&$arFields)
{
    if (!empty($arFields["PRODUCT_ID"])) {
        $productId = $arFields["PRODUCT_ID"];


        $arSelect = array("NAME", "ID", "XML_ID", 'IBLOCK_ID', "DETAIL_PAGE_URL", "CATALOG_GROUP_" . TYPE_PRICE_ID);
        $arFilter = array("ID" => $productId, 'IBLOCK_ID' => IBLOCK_ID_CATALOG);
        $res = CIBlockElement::GetList(array('SORT' => 'ASC'), $arFilter, false, false, $arSelect);
        if ($element = $res->GetNext()) {
            if ($element['CATALOG_QUANTITY'] == 0) {
                $arFields["QUANTITY"] = 1;
                $arFields["CUSTOM_PRICE"] = 'Y';
                $arFields["PRICE"] = 0;

            } else {
                $removeNDS = UserProfileController::removeNDS();
                if ($removeNDS == true) {
                    $arFields['CATALOG_VAT'] = 0;
                    $arFields["CUSTOM_PRICE"] = 'Y';
                    $arFields["PRICE"] = $element['CATALOG_PRICE_' . TYPE_PRICE_ID];
                }

            }


        }
    }


}
 

addEventHandler("sale", "OnSaleOrderBeforeSaved", ["OrderEventer", "onOrderSave"]);
addEventHandler("sale", "OnSaleOrderSaved", ["OrderEventer", "OnSaleOrderSaved"]);

class OrderEventer
{
    public static function OnSaleOrderSaved($ENTITY, $VALUES, $isNew)
    {

        $order = $ENTITY;
        $arOrder = CSaleOrder::GetByID($order->getId());
        if (UserProfileController::removeNDS($arOrder['USER_ID'])) {

            $taxes = $order->getTax();
            $taxesRes = $taxes->resetTaxList();


            $basket = Sale\Basket::loadItemsForOrder($order);
            $basketItems = $basket->getBasketItems();
            foreach ($basket as $basketItem) {
                $basketItem->setField('VAT_RATE', 0);
                $basketItem->save();
            }
            $basket->save();
        }

    }

    public static function onOrderSave($ENTITY, $VALUES)
    {
        $order = $ENTITY;

        $arOrder = CSaleOrder::GetByID($order->getId());
        if (UserProfileController::removeNDS($arOrder['USER_ID'])) {
            $taxes = $order->getTax();
            $taxesRes = $taxes->resetTaxList();
            $order->setField('TAX_VALUE', 0);
            $basket = Sale\Basket::loadItemsForOrder($order);
            $basketItems = $basket->getBasketItems();
            foreach ($basket as $basketItem) {
                $basketItem->setField('VAT_RATE', 0);
                $basketItem->save();
            }
            $basket->save();
        }
    }
}