Too many requests

You are over the rate limit for this key and mode. The response carries RateLimit-Limit, RateLimit-Remaining, RateLimit-Reset and usually Retry-After.

What to do

• Honour Retry-After. It is the answer; anything you compute yourself is a guess.
• Back off exponentially with jitter. Synchronised retries from a fleet turn one limit breach into a stampede.
• If you are polling for a payment's outcome, stop and use webhooks instead. Polling every payment every second is the single most common way to reach this error.