Here are the details of HTTP Failure Response within Fonoa API. Request errors are returned with HTTP status codes starting with 4xx and servers are starting with 5xx. Below is a partial list of responses.

HTTP Result	Result	Description
`400 - Bad Request`	Failure	The request was invalid due to invalid model validation. Developers are advised to check the response body message field for validation error messages.
`401 - Unauthorized`	Denied	The request was not processed because the authorization credentials were not valid or acceptable for this resource.
`402`	Failure	Payment details must be set before this action can be taken.
`403`	Denied	The request was not processed because the authorization credentials do not allow access to the requested resource.
`404 - Not Found`	Not Found	The resource you attempted to access is invalid.
`405`	Disabled	The request method is known by the server but has been disabled and cannot be used.
`406`	Not Acceptable	The input is not acceptable for this resource or for the field it was supplied with.
`408`	Timeout	The request timed out internally. Re-attempt the request.
`409`	Conflict	The request was rejected because of conflicting data or because it exceeded an internal limit.
`414`	Invalid	The request URI or headers exceeded the maximum length supported by the server.
`420` / `429`	Denied	The request may be valid but too many requests are being made. Slow down.
`423`	Temporarily Denied	The requested resource is locked temporarily. You should check the status of pending jobs.
`500 - Internal Server Error`	Error	The request has failed internally and may be partially completed. These should be generated very infrequently.
`500` / `502` / `503` / `504`	Error	There is an internal outage in our stack.