PayPal Sandbox API endpoint returning 503 “Internal Service Error” error
问题 I'm working with the PayPal REST API on the sandbox endpoint at https://api.sandbox.paypal.com/v1/ and nearly every single time I try to POST to payments/payment with a valid request (taking care not to be flagged as a duplicate attempt) it keeps returning a 503 error. Only very occasionally does the request go through but it only did that earlier and now every request is failing with a 503 response. Even when I use PayPal's REST Playground at https://devtools-paypal.com/hateoas/index.html