Проверка наличия товара с таким кодом

$res = CIBlockElement::GetList(Array("SORT"=>"ASC", "PROPERTY_PRIORITY"=>"ASC"), $arFilter, Array("NAME", "CODE", "SORT", "ID","DATE_ACTIVE_FROM","CNT","PROPERTY_CODE_SERVICE","PROPERTY_TIME_SERVICE", "IBLOCK_SECTION_ID"))->Fetch(); 
print_r($res); echo '<br /><br />';
if ($res['CNT']<1):
      echo 'Добавляем<br />';
/*          $el = new CIBlockElement;
         $PROP[126] = $keyadd['0'];
         $PROP[76] = $keyadd['2'];
         $PROP[77] = $keyadd['3'];
         $params = Array(
            "max_len" => "100",
            "change_case" => "L",
            "replace_space" => "_",
            "replace_other" => "_",
            "delete_repeat_replace" => "true",
         );

         $code = $keyadd['1'];

         $arLoadProductArray = Array(
           "MODIFIED_BY"    => 1, // элемент изменен текущим пользователем
           "CREATED_BY"    => 1, // элемент изменен текущим пользователем
           "IBLOCK_SECTION" => "",
           "IBLOCK_ID"      => 6,
           "CODE" => CUtil::translit($code, "ru", $params),
           "PROPERTY_VALUES"=> $PROP,
           "SORT" => 500,
           "NAME" => $keyadd['1'],
           "ACTIVE" => "Y"
           );

         if($PRODUCT_ID = $el->Add($arLoadProductArray)){

          echo "<pre>"; print_r($PRODUCT_ID); echo "</pre>";
           echo " добавлен";
         }else{
           echo "Error: ".$el->LAST_ERROR;
         }  */
else:
   #обновляем
   $el = new CIBlockElement;
        $PROP[126] = $keyadd['0'];
        $PROP[76] = $keyadd['2'];
        $PROP[77] = $res['PROPERTY_TIME_SERVICE_VALUE'];

   $arLoadProductArray = Array(
     "MODIFIED_BY"    => $USER->GetID(),
     "IBLOCK_SECTION" => $res['IBLOCK_SECTION_ID'],    
      "IBLOCK_ID"      => 6,     
     "PROPERTY_VALUES"=> $PROP,
     "NAME"           => $res['NAME'],
      "CODE" => $res['CODE'],
      "SORT" => $res['SORT'],     
     "ACTIVE"         => "Y"
     );
     
   if($el->Update($res['ID'], $arLoadProductArray)):
      echo 'обновлен '.$res['ID'].'<br />';
   else:
      echo 'не могу обновить '.$res['ID'].' <br />';
   endif;
endif;