Error codes

HTTP Code	Meaning	Retry?	Action
200	Success	No	Parse response
400	Bad Request	No	Fix request parameters
401	Unauthorized	Once	Re-authenticate, then retry
403	Forbidden	No	Check API access level
404	Not Found	No	Verify endpoint URL and resource ID
429	Rate Limited	Yes	Exponential backoff (start 1s, max 60s)
500	Server Error	Yes	Retry with backoff (max 3 retries)
502/503	Service Unavailable	Yes	Retry with backoff (max 5 retries)