PayPal以编程方式创建 magento 订单中的发布错误

我正在为Magento网站开发混合移动应用程序。现在我需要以编程方式创建订单。我能够整合PayPal并获得PayPal成功响应。一旦我得到PayPal回复，我就会将数据发布到Magento。这里得到错误，因为

Uncaught exception 'Mage_Core_Exception' with message 'PayPal gateway has rejected request. 
Invalid token (#10410: Invalid token).' in public_html/app/code/core/Mage/Paypal/Model/Api/Nvp.php:1062 

以下是我的订单创建代码。

<?php
// Mage Path
require_once( dirname(__FILE__).'/../app/Mage.php');
umask(0);
// Initialize Magento ...
Mage::app("default");
$id=11; // get Customer Id
$customer = Mage::getModel('customer/customer')->load($id);
$transaction = Mage::getModel('core/resource_transaction');
$storeId = $customer->getStoreId();
$reservedOrderId = Mage::getSingleton('eav/config')->getEntityType('order')->fetchNewIncrementId($storeId);
$order = Mage::getModel('sales/order')
->setIncrementId($reservedOrderId)
->setStoreId($storeId)
->setQuoteId(0)
->setGlobal_currency_code('USD')
->setBase_currency_code('USD')
->setStore_currency_code('USD')
->setOrder_currency_code('USD');
//Set your store currency USD or any other
// set Customer data
$order->setCustomer_email($customer->getEmail())
->setCustomerFirstname($customer->getFirstname())
->setCustomerLastname($customer->getLastname())
->setCustomerGroupId($customer->getGroupId())
->setCustomer_is_guest(0)
->setCustomer($customer);
// set Billing Address
$billing = $customer->getDefaultBillingAddress();
$billingAddress = Mage::getModel('sales/order_address')
->setStoreId($storeId)
->setAddressType(Mage_Sales_Model_Quote_Address::TYPE_BILLING)
->setCustomerId($customer->getId())
->setCustomerAddressId($customer->getDefaultBilling())
->setCustomer_address_id($billing->getEntityId())
->setPrefix($billing->getPrefix())
->setFirstname($billing->getFirstname())
->setMiddlename($billing->getMiddlename())
->setLastname($billing->getLastname())
->setSuffix($billing->getSuffix())
->setCompany($billing->getCompany())
->setStreet($billing->getStreet())
->setCity($billing->getCity())
->setCountry_id($billing->getCountryId())
->setRegion($billing->getRegion())
->setRegion_id($billing->getRegionId())
->setPostcode($billing->getPostcode())
->setTelephone($billing->getTelephone())
->setFax($billing->getFax());
$order->setBillingAddress($billingAddress);
$shipping = $customer->getDefaultShippingAddress();
$shippingAddress = Mage::getModel('sales/order_address')
->setStoreId($storeId)
->setAddressType(Mage_Sales_Model_Quote_Address::TYPE_SHIPPING)
->setCustomerId($customer->getId())
->setCustomerAddressId($customer->getDefaultShipping())
->setCustomer_address_id($shipping->getEntityId())
->setPrefix($shipping->getPrefix())
->setFirstname($shipping->getFirstname())
->setMiddlename($shipping->getMiddlename())
->setLastname($shipping->getLastname())
->setSuffix($shipping->getSuffix())
->setCompany($shipping->getCompany())
->setStreet($shipping->getStreet())
->setCity($shipping->getCity())
->setCountry_id($shipping->getCountryId())
->setRegion($shipping->getRegion())
->setRegion_id($shipping->getRegionId())
->setPostcode($shipping->getPostcode())
->setTelephone($shipping->getTelephone())
->setFax($shipping->getFax());
$order->setShippingAddress($shippingAddress)
->setShipping_method('flatrate_flatrate');
/*->setShippingDescription($this->getCarrierName('flatrate'));*/
/*some error i am getting here need to solve further*/
//you can set your payment method name here as per your need
$orderPayment = Mage::getModel('sales/order_payment')
->setStoreId($storeId)
->setCustomerPaymentId("PAY-9G20599927263253EK6BC2SA")
->setMethod('paypal_express')
->setPo_number('8EV04718DA563240K');
$order->setPayment($orderPayment);
// let say, we have 2 products
//check that your products exists
//need to add code for configurable products if any
$subTotal = 0;
$products = array(
    '1' => array(
    'qty' => 2
    ));
foreach ($products as $productId=>$product) {
//$_product = Mage::getModel('catalog/product')->load($productId);
$id = Mage::getModel('catalog/product')->getResource()->getIdBySku('property_415682');
if ($id) {
    $_product = Mage::getModel('catalog/product')->load($id);
}
$rowTotal = $_product->getPrice() * $product['qty'];
$orderItem = Mage::getModel('sales/order_item')
->setStoreId($storeId)
->setQuoteItemId(0)
->setQuoteParentItemId(NULL)
->setProductId($productId)
->setProductType($_product->getTypeId())
->setQtyBackordered(NULL)
->setTotalQtyOrdered($product['rqty'])
->setQtyOrdered($product['qty'])
->setName($_product->getName())
->setSku($_product->getSku())
->setPrice($_product->getPrice())
->setBasePrice($_product->getPrice())
->setOriginalPrice($_product->getPrice())
->setRowTotal($rowTotal)
->setBaseRowTotal($rowTotal);
$subTotal += $rowTotal;
$order->addItem($orderItem);
}
$order->setSubtotal($subTotal)
->setBaseSubtotal($subTotal)
->setGrandTotal($subTotal)
->setBaseGrandTotal($subTotal);
$transaction->addObject($order);
$transaction->addCommitCallback(array($order, 'place'));
$transaction->addCommitCallback(array($order, 'save'));
$transaction->save();

我遵循的参考是

http://pragneshkaria.com/programmatically-create-order-in-magento/

对于PayPal支付集成，我使用了这个插件

 https://github.com/paypal/PayPal-Cordova-Plugin

我是magento和离子应用程序开发的新手，因此非常感谢任何形式的帮助。

提前谢谢。