Paypal 退款 API 操作出现错误 520002

Question

我正在尝试用 bash 编写部分退款 Paypal 交易的代码。这是我正在关注的指南 https://developer.paypal.com/docs/classic/api/adaptive-payments/Refund_API_Operation/但我收到了 520002 错误消息。在之前的请求中，我看到需要指定 receiverList.receiver(0).email 但它仍然无法正常工作。这是我的请求的样子:

curl -s --insecure
-H "X-PAYPAL-SECURITY-USERID: api_username" 
-H "X-PAYPAL-SECURITY-PASSWORD: api_password" 
-H "X-PAYPAL-SECURITY-SIGNATURE: api_signature" 
-H "X-PAYPAL-REQUEST-DATA-FORMAT: NV" 
-H "X-PAYPAL-RESPONSE-DATA-FORMAT: NV"
-H "X-PAYPAL-APPLICATION-ID: your_app_id "          
https://svcs.sandbox.paypal.com/AdaptivePayments/Refund  -d  
"requestEnvelope.errorLanguage=en_US 
&requestEnvelope.detailLevel=ReturnAll
&transactionId=xxxxxxxxxx
&receiverList.receiver(0).email=xxxxxxxx
&currencyCode=EUR
&receiverList.receiver(0).amount=44.00"

有人知道怎么解决吗？

Answer 1

我认为您为此使用了错误的 API。您的端点转到 Adaptive Payments API，该 API 用于非常具体的业务案例并且实现起来非常复杂。

如果您想对使用 PayPal Express Checkout 或 PayPal Standard 进行的付款进行简单退款，您应该使用 RefundTransaction API 调用。 https://developer.paypal.com/docs/classic/express-checkout/ht_basicRefund-curl-etc/

你的 CURL 调用应该是这样的:

Endpoint URL: https://api-3t.sandbox.paypal.com/nvp
HTTP method: POST
POST data:
USER=merchant_user_name
&PWD=merchant_password
&SIGNATURE=merchant_signature
&METHOD=RefundTransaction
&VERSION=94
&TRANSACTIONID=transaction_ID    #ID of the transaction for which the refund is made 
&REFUNDTYPE=Full    #Specifies a full refund; a partial refund requires more input fields