We sometimes face the throttling response although we are not making concurrent requests and the request rate is low (we still developing the application calling the Pilot environment).
429 The API client is making too many concurrent requests, and some are being throttled. Throttled requests can be retried (with an updated request Date and HTTP signature) after a short delay.
What is the throttling threshold?. And what is the time period after which we should try again in case we exceeded that threshold?.