array(9) {
  ["orderId"]=>
  NULL
  ["expireDate"]=>
  string(24) "2026-04-28T05:50:40.005Z"
  ["returnUrl"]=>
  string(22) "https://7pay.wowgc.ru/"
  ["productName"]=>
  NULL
  ["amount"]=>
  int(0)
  ["merchantId"]=>
  int(2211)
  ["merchantDeliveryAmount"]=>
  int(0)
  ["clientDeliveryAmount"]=>
  int(0)
  ["notificationUrl"]=>
  string(30) "https://7pay.wowgc.ru/hook.php"
}
Ошибка запроса: Client error: `POST https://merchant-api.7pay.ru/api/Invoice/` resulted in a `400 Bad Request` response:
{"status":400,"success":false,"errorMessage":"Invalid ExternalId, ProductName"}

Ответ сервера: {"status":400,"success":false,"errorMessage":"Invalid ExternalId, ProductName"}