Paypal setExpressCheckout nvp税额错误

Question

我正在从贝宝请求一个setExpressCheckout调用，我收到错误代码10413。它工作得很好，直到我从项目总数中去掉了税，并将&PAYMENTREQUEST__TAXAMT添加到了请求中。以下是请求url：

https://api.sandbox.paypal.com/nvp?
METHOD=setExpressCheckout&VERSION=87.0
&USER=XXXXXXXXXX
&PWD=XXXXXXXXXX
&SIGNATURE=XXXXXXXXXX
&RETURNURL=XXXXXXXXXX
&CANCELURL=XXXXXXXXXX
&L_PAYMENTREQUEST_0_NAME0=Hy+Guardian+Fly+Rug
&L_PAYMENTREQUEST_0_NUMBER0=HY-FLY
&L_PAYMENTREQUEST_0_DESC0=Size%3A+4+ft+6%2C+Size%3A+4+ft+6%2C+Size%3A+4+ft+6%2C+Size%3A+4+ft+6
&L_PAYMENTREQUEST_0_AMT0=47.00
&L_PAYMENTREQUEST_0_QTY0=1
&PAYMENTREQUEST_0_CURRENCYCODE=GBP
&PAYMENTREQUEST_0_ITEMAMT=37.60
&PAYMENTREQUEST_0_SHIPPINGAMT=11.25
&PAYMENTREQUEST_0_TAXAMT=9.40
&PAYMENTREQUEST_0_AMT=58.25

Answer 1

根据我的评论，

您的总金额似乎与您的项目总金额不同。

即

&PAYMENTREQUEST_0_CURRENCYCODE=GBP
&PAYMENTREQUEST_0_ITEMAMT=37.60
&PAYMENTREQUEST_0_SHIPPINGAMT=11.25
&PAYMENTREQUEST_0_TAXAMT=9.40
&PAYMENTREQUEST_0_AMT=58.25

显示58.25

现在还没有

L_PAYMENTREQUEST_0_AMT0=47.00

显示47.00

价格不匹配可能会导致此问题;)