getContext()->getRequest(); $entityId = intval($request->get("InvId")); list($orderId, $paymentId) = \Bitrix\Sale\PaySystem\Manager::getIdsByPayment($entityId); if ($orderId > 0) { /** @var \Bitrix\Sale\Order $order */ $order = \Bitrix\Sale\Order::load($orderId); if ($order) { /** @var \Bitrix\Sale\PaymentCollection $paymentCollection */ $paymentCollection = $order->getPaymentCollection(); if ($paymentCollection && $paymentId > 0) { /** @var \Bitrix\Sale\Payment $payment */ $payment = $paymentCollection->getItemById($paymentId); if ($payment) { $data = \Bitrix\Sale\PaySystem\Manager::getById($payment->getPaymentSystemId()); $service = new \Bitrix\Sale\PaySystem\Service($data); if ($service) $service->processRequest($request); } } } }