按属性检查信息块中是否存在现有元素 (Bitrix)

朋友们，提前请你们不要把问题看得太严格，我是第一次写剧本。

有2个信息块：

1. Infoblock (ID=2) 包含商品，我在那里收集了一个包含 WB 文章的数组；
2. Infoblock (ID=7)，我在其中添加评论本身（我通过 API 收集）。

脚本功能：使用 API，我从 WB 接收对某些产品的评论（通过 WB 文章，与产品一起列在信息块中），并将元素添加到包含评论的信息块中。

请告诉我如何确保在执行函数时检查是否存在此评论（即重新运行脚本时，不会添加已经存在的评论），WB 的每个评论都有一个唯一ID（例如：kzgXM4MB65w5GC7j5vjK），基于此元素属性信息块与评论（ID 7）并检查是否存在评论。

预先感谢大家的帮助！

<?php
// подключение функций пролога
require($_SERVER["DOCUMENT_ROOT"] . "/bitrix/modules/main/include/prolog_before.php");

set_time_limit(60);

CModule::IncludeModule("main"); // CFile
CModule::IncludeModule("iblock"); // CIBlockElement

$PRODUCT_IBLOCK = '2';
$REVIEWS_IBLOCK = '7';

function getRequestResult($request)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $request);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $headers = array();
    $headers[] = 'Content-Type: application/json';
    $headers[] = 'Authorization: ........';
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    $result = curl_exec($ch);
    if (curl_errno($ch)) { 
        echo 'Error:' . curl_error($ch);
    }
    curl_close($ch);
    return $result;
}

function parseAndAdd($artnum, $PRODUCT_IBLOCK) {
    $org_url = 'https://feedbacks-api.wildberries.ru/api/v1/feedbacks?isAnswered=true&nmId='. $artnum .'&take=5000&skip=0';
    $html = getRequestResult($org_url);
    
    $arr = json_decode($html, true);
    $counter = 0;
    
    foreach($arr['data']['feedbacks'] as $value){
    
        //Свойства
        $PROP = array();
        $i = 0;
        if (!empty($value['photoLinks'])) {
            foreach ($value['photoLinks'] as $morePhoto) {
                $arMorePhoto['n'.$i] = array("VALUE"=>CFile::MakeFileArray($morePhoto['fullSize']));
                $i++;
            }
        }
        $PROP['ART_WB'] = $value['productDetails']['nmId'];
        $PROP['RAITING'] = $value['productValuation'];
        $PROP['ISTOCHNIK'] = $value['state'];
        $PROP['PHOTO'] = $arMorePhoto;
        $PROP['REVIEWSID'] = $value['id'];
        
        //$photolinks[] = $value['photoLinks'];
        /*if (!empty($photolinks)) {
            foreach($photolinks as $photo){
                $photo = $photo['fullSize'];
            }
        }*/
        
        $el = new CIBlockElement;
        $fields = [
            'ACTIVE' => "Y",
            'IBLOCK_ID' => 7,
            "IBLOCK_SECTION_ID" => false,
            "NAME" => $value['userName'],
            "PREVIEW_TEXT" => $value['text'],
            "PREVIEW_PICTURE" => $imgUrl ? CFile::MakeFileArray($imgUrl) : CFile::MakeFileArray($_SERVER["DOCUMENT_ROOT"]."/local/api/wb/avatar.png"),
            "PROPERTY_VALUES" => $PROP,
            //'ACTIVE_FROM' => $date, // Начало активности
            //'DATE_CREATE' => $date, // Дата создания
        ];
        
        if ($PRODUCT_ID = $el->Add($fields)) {
            echo 'Добавлен отзыв, ID: ' . $PRODUCT_ID . '<br />';
            $counter++;
        } else {
            echo "Error[" . $PRODUCT_ID . "]: " . $el->LAST_ERROR . '<br />';
        }
        
    }
    
    echo 'Отзывы по товару с артикулом '.$artnum . ' добавлены. Количество '. $counter. '<br>';
    
}

//print_r($photo);
//print_r(parseAndAdd(113509876, 6));

$places_ids = []; // Храню артикулы всех товаров, по которым будет забирать отзывы
$arSelect = ["NAME","PROPERTY_ART_WB"];
$arFilter = ["IBLOCK_ID" => $PRODUCT_IBLOCK,"ACTIVE" => "Y",];
$resp = CIBlockElement::GetList(Array(), $arFilter, false, false, $arSelect);
while($ob = $resp->GetNextElement()) {
    $arFields = $ob->GetFields(); // Получаю значения полей элемента
    $places_ids[] = $arFields['PROPERTY_ART_WB_VALUE']; // Заполняю массив с артикулами
}

foreach ($places_ids as $arrwb) {
    if (!empty($arrwb)) {
        parseAndAdd($arrwb, 7);
    }
}
?>