Error Response Codes

The Mobile Text API returns HTTP status codes and JSON-based error codes and messages.

HTTP Status Codes

Each API request returns an HTTP status code. This three-digit code indicates the request outcome. See Error Message Catalog for detailed examples of errors you may encounter.

Code		Description
200	Success	Indicates a successful request and contains response headers with additional details about the request.
400	BadRequestError	Indicates that the request was malformed or invalid. Make sure you included all required fields for the endpoint in the request.
401	UnauthorizedError	Indicates that the client is not authorized to access the requested resource. Make sure you include a valid API key in the request header.
403	ForbiddenError	Indicates the client is authenticated but not authorized to access the requested resource.
429	RateLimitError	Indicates too many requests to the server within a window of time, exceeding the allowed rate limit for that endpoint.
500	InternalServerError	Indicates the server encountered an unexpected error that prevented it from fulfilling the request. This usually means there is an issue with the server, not the request.