我在通过 DoExpressCheckoutPayment 方法捕获Paypal付款时遇到问题。 Paypal失败并返回时只有一个10004错误，表示
由于参数无效，交易被拒绝。有关详细信息，请参阅其他错误消息。
但是，Paypal没有指定哪个参数无效。
在这种情况下，有没有办法要求Paypal提供更多详细信息？
以下是我使用NVP API发布到Paypal的论据。
DoExpressCheckoutPayment
L_PAYMENTREQUEST_0_NAME0=Hieu+Nguyen
L_PAYMENTREQUEST_0_AMT0=20
L_PAYMENTREQUEST_0_QTY0=1
PAYMENTREQUEST_0_AMT=20
PAYMENTREQUEST_0_ITEMAMT=20
PAYMENTREQUEST_0_SHIPTOPHONENUM=452435243
EMAIL=hieu%40thirststudios.com
METHOD=DoExpressCheckoutPayment
VERSION=124.0
PWD=[masked]
USER=[masked]
SIGNATURE=[masked]
PAYMENTREQUEST_0_PAYMENTACTION=Sale
RETURNURL=http%3A%2F%2Fhakuba.centralsnowsports.com.au.local%2F%3FACT%3D53%26G%3DVXdJWStNWGFNSTIvQ09mNmE1cXJWSXlDN0lqYXlQdnNZRjBHL2NoaWpMNVAwNGlaN1A2K1crNVRBbUpmNG1yY05NTC9Mb1hHUVBQL0VsTG9rUEFzbFE9PQ%3D%3D%26M%3DVldsZFNoZVVsRTBJNjFLbmxZSWRtbitQVkZvNEI1M2hrQXNUb2hBZHozQnhCcUVFZkJmM3B0VVBvek1vV3ZPdGpubXJuQlNHd1FaU01wcDNYZVlGMVE9PQ%3D%3D
CANCELURL=http%3A%2F%2Fhakuba.centralsnowsports.com.au.local%2F%3FACT%3D53%26G%3DejNhR1BDSlhRZ1o0MzZoWFAvVmttY2pzMzF5amhqbDZzV2NMemoxbjcvY2dPQTZ4ZlVtL0ltRUx0dmkwUlV0Y3dpRDBuUWxJNk12cnREVDQ4Z1NYMWc9PQ%3D%3D%26M%3DR013TVBmL1FHZkRtOWVRSzVUL0JqMmZYa1B4RTJVNFptdjBPSGJFTlJqK2VSdkU5V25FczM4WEs2WkcwK3FPaWxwYkFSaW1JbGpHOVJSbWpTRjR4N3c9PQ%3D%3D
PAYMENTREQUEST_0_CURRENCYCODE=JPY
ALLOWNOTE=0
CHANNELTYPE=Merchant
PAYMENTREQUEST_0_ALLOWEDPAYMENTMETHOD=InstantPaymentOnly
LOCALECODE=US
ADDROVERRIDE=0
NOSHIPPING=1
SOLUTIONTYPE=Sole
LANDINGPAGE=Billing
TOKEN=EC-59S20038JL208993V
PAYERID=XAC7EG8Y2M5D6
IPADDRESS=hakuba.centralsnowsports.com.au.local
[已更新] 更多API调用参数
SetExpressCheckout
L_PAYMENTREQUEST_0_ITEMCATEGORY0=Physical
L_PAYMENTREQUEST_0_NAME0=Hieu+Nguyen
L_PAYMENTREQUEST_0_AMT0=20
L_PAYMENTREQUEST_0_QTY0=1
PAYMENTREQUEST_0_AMT=20
PAYMENTREQUEST_0_ITEMAMT=20
PAYMENTREQUEST_0_SHIPTOPHONENUM=3143214
EMAIL=hieu%40thirststudios.com
METHOD=SetExpressCheckout
VERSION=124.0
PWD=[masked]
USER=[masked]
SIGNATURE=[masked]
PAYMENTREQUEST_0_PAYMENTACTION=Sale
RETURNURL=http%3A%2F%2Fhakuba.centralsnowsports.com.au.local%2F%3FACT%3D53%26G%3DRlN5WWJUS21HeGd6cTlSTm95MFpZMkxTTTdMZEZ1OUV6S2FIY0pYSjVnM1M0d2FjQjVIQnlqQ3F2d3NFSHRhZHB3bTVnRUE3T1NzN0EwOTcvOVlIQ3c9PQ%3D%3D%26M%3DYWNEUGhhemNVRzNpM0liMEVSUi94TmxkRDZRdmM2R3UrTUh0c2x1dFgwZ2tTNHJjV2lRUHBMWjR6d29vTkxXa3VRUnRPM0xNcnoyYlNHV2NKU2kzb2c9PQ%3D%3D
CANCELURL=http%3A%2F%2Fhakuba.centralsnowsports.com.au.local%2F%3FACT%3D53%26G%3DWnJzWDBWU1JaZndldStIY1FUNjFUWlNyTWYwR0N4NlRQK0VnajAvRjF2bFViZlVhZWphU0o3M1Z5dlNrdWlHOG4rRGd6OUdHNHJQaVhMa0tzamZvcnc9PQ%3D%3D%26M%3DemsxeGV1cnZ4a2JVWnhZRHNaU0ExTHBOaEp6dUQ1b2hiTVF5MXVxMjZyaFh1aFRhUGQvZ0M3dlZGT2dFU0FUelU3bjR6Qm5VVFBLT2xPSlJTN3ROUmc9PQ%3D%3D
PAYMENTREQUEST_0_CURRENCYCODE=JPY
ALLOWNOTE=0
CHANNELTYPE=Merchant
PAYMENTREQUEST_0_ALLOWEDPAYMENTMETHOD=InstantPaymentOnly
LOCALECODE=US
ADDROVERRIDE=0
NOSHIPPING=1
SOLUTIONTYPE=Sole
LANDINGPAGE=Billing
GetExpressCheckoutDetails
METHOD=GetExpressCheckoutDetails
VERSION=124.0
PWD=[masked]
USER=[masked]
SIGNATURE=[masked]
TOKEN=EC-75541725B7341060R
答案 0 :(得分：0)
更新：对于记录，问题在几天后自行解决。这一定是Paypal内部引擎的问题。不过，在这次事件发生后，我们最终还是离开了Paypal。