Particle Health APIs support standard HTTP response status codes to indicate why something might not be working. Where possible, additional context will be included in the response to help you debug your implementation.

Code	Text	Context
400	Bad Request	Your request is invalid. Look at the error message to learn why.
401	Unauthorized	You used incorrect authentication credentials.
403	Forbidden	You have insufficient permissions to access the requested resource.
404	Not Found	The specified resource could not be found.
405	Method Not Allowed	You used an invalid HTTP method.
406	Not Acceptable	You requested a format that we don't support.
410	Gone	The resource requested has expired and been removed from our servers.
412	Precondition Failed	An operation might still be in progress.
429	Too Many Requests	You've made too many requests in a short period of time. Contact support if you feel this is in error.
500	Internal Server Error	Something went wrong on our end. Try again in a bit. We'll also be alerted automatically to look into it.
503	Service Unavailable	We're temporarily offline for maintenance. Try again in a bit.