Форум

if (!isset(self::$catalogList[$arProduct['IBLOCK_ID']]))
      {
         $catalogIterator = Catalog\CatalogIblockTable::getList(array(
            'select' => array('IBLOCK_ID', 'SUBSCRIPTION'),
            'filter' => array('IBLOCK_ID' => $arProduct['IBLOCK_ID'])
         ));
         self::$catalogList[$arProduct['IBLOCK_ID']] = $catalogIterator->fetch();
      }

Array
        (
            [IBLOCK_ID] => ИдИнфоблока
            [SUBSCRIPTION] => N
        )

if (empty(self::$catalogList[$arProduct['IBLOCK_ID']]) || !is_array(self::$catalogList[$arProduct['IBLOCK_ID']])) {

         return $arResult;
      }