我尝试根据此处https://developer.paypal.com/docs/subscriptions/integrate/integrate-steps/#3-create-an-agreement给出的示例进行简单的请求，以创建PayPal Biling协议。服务器响应始终为：“ INTERNAL_SERVICE_ERROR”，“发生内部服务错误”。
我使用经典的ASP代码：
sRequest = " {""name"": ""Magazine Subscription"", ""description"": ""Monthly agreement with a regular monthly payment definition"", ""start_date"": ""2019-01-09T07:41:38Z"", ""plan"": {""id"": ""P-7S816327W1048253XEAEXK6I""}, ""payer"": {""payment_method"": ""paypal""}} "
var_json = GetPayPal(PAYPAL_API_ENDPOINT() & "v1/payments/billing-agreements/", "POST", "", sHttpStatus)
因此，结果JSON请求为：
{"name": "Magazine Subscription", "description": "Monthly agreement with a regular monthly payment definition", "start_date": "2019-01-08T07:41:38Z", "plan": {"id": "P-7S816327W1048253XEAEXK6I"}, "payer": {"payment_method": "paypal"}}
Windows curl请求返回相同的错误，直到我在屏幕上引用如下：
curl -v -X POST https://api.sandbox.paypal.com/v1/payments/billing-agreements/ -H "Content-Type: application/json" -H "Authorization: Bearer AccessToken" -d "{\"name\": \"Magazine Subscription\", \"description\": \"Monthly agreement with a regular monthly payment definition\", \"start_date\": \"2019-01-07T17:41:38Z\", \"plan\": {\"id\": \"P-7S816327W1048253XEAEXK6I\"}, \"payer\": {\"payment_method\": \"paypal\"}}"
我不知道如何在沙箱中的经典ASP上创建正确的REST请求以创建PayPal计费协议。
我创建了获取访问令牌的请求，然后使用它来创建计费方案并将其状态设置为ACTIVE。所有请求已成功结束。唯一的区别是，没有必要使用JSON筛选以前的curl测试查询中的引号来获取结果。 例如，更新计费计划卷曲：
curl -v -X PATCH https://api.sandbox.paypal.com/v1/payments/billing-plans/P-5S2563434M1564209CROHHLY -H "Content-Type: application/json" -H "Authorization: Bearer A21AAFF3tgbustGBIsrje-lmJHXYJOBUVhi4QmU6ZP21i8YKHBfaECpgUkNMujGCG629RSO3d9G3sM3pq9eOTIo44Yd575w2g" -d '[{"op": "replace","path": "/","value":{"state": "ACTIVE"}}]'
以及经典的ASP代码：
strRequest = " [{""op"": ""replace"",""path"": ""/"",""value"":{""state"":""" & sState & """}}] "
var_json = GetPayPal(PAYPAL_API_ENDPOINT() & "v1/payments/billing-plans/" & sBillingPlanID & "/", "PATCH", strRequest, sHttpStatus)