我在付款详细信息中调用ActionType设置为“authorize”的SetExpressCheckout方法

SetExpressCheckoutRequestDetailsType reqDetails = new SetExpressCheckoutRequestDetailsType();
reqDetails.ReturnURL = "http://some.url";
reqDetails.CancelURL = "http://some.url";
reqDetails.NoShipping = "1";
reqDetails.OrderDescription = "You're about to buy items for " + payment.Amount.ToString("F");
reqDetails.cpplogoimage = "http://some.ulr/image.jpb";
reqDetails.PaymentDetails = new PaymentDetailsType[1];
reqDetails.PaymentDetails[0] = new PaymentDetailsType();
reqDetails.PaymentDetails[0].PaymentDetailsItem = new PaymentDetailsItemType[cart.LineItems.Count];
int i = 0;
foreach (LineItemModel li in cart.LineItems)
{
    PaymentDetailsItemType item = new PaymentDetailsItemType();
    item.Amount = new BasicAmountType();
    item.Amount.Value = li.TotalIncludingShipping.ToString("F");
    item.Amount.currencyID = CurrencyCodeType.AUD;
    item.Name = li.ProductItem.DisplayName;
    item.Number = li.ProductItem.SKU;
    item.Quantity = li.Quantity.ToString();
    item.Description = "";
    reqDetails.PaymentDetails[0].PaymentDetailsItem.SetValue(item, i);
    i++;
}
reqDetails.OrderTotal = new BasicAmountType()
{
    currencyID = CurrencyCodeType.AUD,
    Value = payment.Amount.ToString("F")
};
reqDetails.PaymentDetails[0].PaymentAction = PaymentActionCodeType.Authorization;
reqDetails.PaymentDetails[0].PaymentActionSpecified = true;
SetExpressCheckoutReq req = new SetExpressCheckoutReq()
{
    SetExpressCheckoutRequest = new SetExpressCheckoutRequestType()
    {
        Version = "104.0",
        SetExpressCheckoutRequestDetails = reqDetails
    }
};

然后我打电话给DoExprescheckout。这是请求的代码

DoExpressCheckoutPaymentReq payReq = new DoExpressCheckoutPaymentReq()
{
    DoExpressCheckoutPaymentRequest = new DoExpressCheckoutPaymentRequestType()
    {
        Version = ConfigurationManager.AppSettings["PaypalAPIVersion"],
        DoExpressCheckoutPaymentRequestDetails = new DoExpressCheckoutPaymentRequestDetailsType()
        {
             Token = token,
             PayerID = payerID,
             PaymentDetails = new PaymentDetailsType[1]
        }
    }
};           
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentAction = PaymentActionCodeType.Authorization;
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentActionSpecified = true;
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0] = new PaymentDetailsType();
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0].PaymentAction = PaymentActionCodeType.Authorization;
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0].PaymentActionSpecified = true;
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0].OrderTotal = new BasicAmountType();
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0].OrderTotal.currencyID = CurrencyCodeType.AUD;
payReq.DoExpressCheckoutPaymentRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0].OrderTotal.Value = total.ToString("F");

此请求也返回“成功”。我保存响应的DoExprescheckOutPaymentResponseDetails.PaymentInfo[0].TransactionId以备将来使用

但是当我使用前面响应中的事务ID运行DoAuthorize时，我得到的是“failure”。下面是请求代码：

DoAuthorizationReq authReq = new DoAuthorizationReq()
{
    DoAuthorizationRequest = new DoAuthorizationRequestType() 
    {
        Version = "104.0",
        TransactionID = doCheckoutTransactionId
    }
};
authReq.DoAuthorizationRequest.Amount = new BasicAmountType();
authReq.DoAuthorizationRequest.Amount.currencyID = CurrencyCodeType.AUD;
authReq.DoAuthorizationRequest.Amount.Value = total.ToString("F");

响应显示“Failure”，错误数组包含1个ErrorCode=10609的项，消息为“无效事务ID”

你有什么想法为什么会这样吗？

多谢！