Amazon MWS XML feed-无效项目

Question

使用MWS API提交订单履行供稿时遇到问题。我尝试发送的XML是：

<?xml version="1.0" encoding="utf-8"?>
<AmazonEnvelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="amzn-envelope.xsd">
<Header>
    <DocumentVersion>1.01</DocumentVersion>
    <MerchantIdentifier>**************</MerchantIdentifier>
</Header>
<MessageType>OrderFulfillment</MessageType>
<Message>
    <MessageID>1</MessageID>
    <OrderFulfillment>
        <AmazonOrderID>###-#######-#######</AmazonOrderID>
        <MerchantFulfillmentID>******************</MerchantFulfillmentID>
        <FulfillmentDate>2018-07-13T16:47:51.583+01:00</FulfillmentDate>
        <FulfillmentData>
            <CarrierCode>Other</CarrierCode>
            <ShippingMethod>DPD</ShippingMethod>
            <ShipperTrackingNumber>##############</ShipperTrackingNumber>
        </FulfillmentData>
        <Item>
            <AmazonOrderItemCode>B071L86TM1</AmazonOrderItemCode>
            <MerchantOrderItemID>***-###</MerchantOrderItemID>
            <Quantity>1</Quantity>
        </Item>
    </OrderFulfillment>
</Message>
</AmazonEnvelope>

我收到通用XML错误消息：

<Result>
    <MessageID>1</MessageID>
    <ResultCode>Error</ResultCode>
    <ResultMessageCode>25</ResultMessageCode>
    <ResultDescription>We are unable to process the XML feed because one or more items are invalid. Please re-submit the feed.</ResultDescription>
</Result>

我检查了其他类似的问题，但没有帮助：'FulfillmentDate'具有ISO 8601格式和时区偏移，遗漏'Item'不起作用，将'CarrierCode'替换为'CarrierName'不起作用，切换将'AmazonOrderID'替换为'MerchantOrderID'无效。