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?.