Почему шлюз сбер эквайринга не отвечает?

Question

maxim @m1rvi

Почему шлюз сбер эквайринга не отвечает?

Подключил сбер эквайринг к сайту.
В параметрах можно настроить корзину к чеку, сделал это.
Все нормально работает, но если в эту корзину набить больше 8 товаров, и отправить, то
шлюз просто не отвечает, выдавая null.

spoiler

{ ["userName"]=> string(17) "-----" ["password"]=> string(13) "----" ["orderNumber"]=> int(1257) ["orderBundle"]=> string(2505) "{"cartItems":{"items":[{"positionId":133,"name":"Пицца Тоскана","quantity":{"value":"1","measure":"шт."},"itemAmount":46500,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":46500},{"positionId":1000,"name":"Пицца Прошутто Фунги","quantity":{"value":"1","measure":"шт."},"itemAmount":47000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":47000},{"positionId":972,"name":"Пицца Маргарита","quantity":{"value":"1","measure":"шт."},"itemAmount":49500,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":49500},{"positionId":414,"name":"Римская пицца Маргарита","quantity":{"value":"1","measure":"шт."},"itemAmount":95000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":95000},{"positionId":960,"name":"Паста Алио и Олио","quantity":{"value":"1","measure":"шт."},"itemAmount":32500,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":32500},{"positionId":281,"name":"Фокачча с вялеными томатами","quantity":{"value":"1","measure":"шт."},"itemAmount":25000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":25000},{"positionId":145,"name":"Салат Капрезе","quantity":{"value":"1","measure":"шт."},"itemAmount":46500,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":46500},{"positionId":241,"name":"Сок фруктовый Rioba","quantity":{"value":"1","measure":"шт."},"itemAmount":20000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":20000},{"positionId":796,"name":"Coca-Cola","quantity":{"value":"1","measure":"шт."},"itemAmount":17500,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":17500},{"positionId":504,"name":"Вода минеральная BonAqua","quantity":{"value":"1","measure":"шт."},"itemAmount":10000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":10000},{"positionId":130,"name":"Итальянский обед","quantity":{"value":"1","measure":"шт."},"itemAmount":120000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":120000},{"positionId":59,"name":"Итальянский ужин","quantity":{"value":"1","measure":"шт."},"itemAmount":130000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":130000},{"positionId":0,"name":"Доставка","quantity":{"value":1,"measure":"шт."},"itemAmount":28000,"itemCode":"123456","tax":{"taxType":0,"taxSum":0},"itemPrice":28000}]}}" ["amount"]=> int(667500) ["returnUrl"]=> string(37) "https://punto-zero.ru/pay_success.php" ["failUrl"]=> string(34) "https://punto-zero.ru/pay_fail.php" ["description"]=> string(37) "Заказ №1257 на punto-zero.ru" }

Мы так же находимся в тестовом режиме, может поэтому?