# Status Codes

Table 1 Status codes
Status Code | Message Title | Description
--- | --- | ---
100 | Continue | The client should continue with its request. This interim response is used to inform the client that the initial part of the request has been received and has not yet been rejected by the server.
101 | Switching Protocols | The requester has asked the server to switch protocols and the server has agreed to do so. The protocol should be switched only when it is advantageous to do so. For example, switching to a newer version of HTTP is advantageous over older versions.
201 | Created | The request has been fulfilled and resulted in a new resource being created.
202 | Accepted | The request has been accepted for processing, but the processing has not been completed.
203 | Non-Authoritative Information | The server successfully processed the request, but is returning information that may be from another source.
204 | NoContent | The server successfully processed the request and is not returning any content. The status code is returned in response to an HTTP OPTIONS request.
205 | Reset Content | The server successfully processed the request, but is not returning any content.
206 | Partial Content | The server has fulfilled the partial GET request for the resource.
300 | Multiple Choices | There are multiple options for the resource from which the client may choose. For example, this code could be used to present a list of resource characteristics and addresses from which the client such as a browser may choose.
301 | Moved Permanently | The requested resource has been assigned a new permanent URI and any future references to this resource should use one of the returned URIs.
302 | Found | The requested resource resides temporarily under a different URI.
303 | See Other | The response to the request can be found under a different URI and should be retrieved using a GET or POST method.
304 | Not Modified | The requested resource has not been modified. When the server returns this status code, it does not return any resources.
305 | Use Proxy | The requested resource must be accessed through a proxy.
306 | Unused | This HTTP status code is no longer used.
400 | BadRequest | The request could not be understood by the server due to malformed syntax. The client should not repeat the request without modifications.
401 | Unauthorized | The authorization information provided by the client is incorrect or invalid. Check the username and password.
402 | Payment Required | This status code is reserved for future use.
403 | Forbidden | The server understood the request, but is refusing to fulfill it. The client should not repeat the request without modifications.
404 | NotFound | The requested resource cannot be found. The client should not repeat the request without modifications.
405 | MethodNotAllowed | The method specified in the request is not allowed for the requested resource. The client should not repeat the request without modifications.
406 | Not Acceptable | The server cannot fulfill the request based on the content characteristics of the request.
407 | Proxy Authentication Required | This code is similar to 401, but indicates that the client must first authenticate itself with the proxy.
408 | Request Time-out | The client does not produce a request within the time that the server was prepared to wait. The client may repeat the request without modifications at any later time.
409 | Conflict | The request could not be completed due to a conflict with the current state of the resource. This status code indicates that the resource that the client attempts to create already exists, or the request fails to be processed because of the update of the conflict request.
410 | Gone | The requested resource is no longer available. The requested resource has been deleted permanently.
411 | Length Required | The server refuses to process the request without a defined Content-Length.
412 | Precondition Failed | The server does not meet one of the preconditions that the requester puts on the request.

413

Request Entity Too Large

The server is refusing to process a request because the request entity is larger than the server is willing or able to process. The server may close the connection to prevent the client from continuing the request. If the condition is temporary, the server should include a Retry-After header field to indicate that it is temporary and after what time the client may try again.

414 | Request-URI Too Large | The server is refusing to service the request because the request URI is longer than the server is willing to interpret.
415 | Unsupported Media Type | The server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method.
416 | Requested range not satisfiable | The requested range is invalid.
417 | Expectation Failed | The server fails to meet the requirements of the Expect request header field.
422 | UnprocessableEntity | The request was well-formed but was unable to be followed due to semantic errors.
429 | TooManyRequests | The client has sent more requests than its rate limit is allowed within a given amount of time, or the server has received more requests than it is able to process within a given amount of time. In this case, the client should repeat requests after the time specified in the Retry-After header of the response expires.
500 | InternalServerError | The server encountered an unexpected condition which prevented it from fulfilling the request.
501 | Not Implemented | The server does not support the functionality required to fulfill the request.
502 | Bad Gateway | The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request.
503 | ServiceUnavailable | The requested service is unavailable. The client should not repeat the request without modifications.
504 | ServerTimeout | The request cannot be fulfilled within a given amount of time. The response will reach the client only if the request carries a timeout parameter.
505 | HTTP Version not supported | The server does not support the HTTP protocol version used in the request.

Parent topic: Appendix