Updated on 2025-02-14 GMT+08:00

Status Codes

Table 1 describes status codes.

Table 1 Status codes

Status Code

Message

Description

100

Continue

The client should continue with its request.

This code is issued on a provisional basis while request processing continues. It alerts the client to wait for a final response.

101

Switching Protocols

The protocol should be switched The protocol can only be switched to a more advanced protocol.

For example, switch to a later version of HTTP.

201

Created

The request has been fulfilled and resulted in a new resource being created.

202

Accepted

The request has been accepted, 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 has successfully processed the request, but does not return 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 with a new permanent URI. This new URI is contained in the response.

302

Found

The requested resource was temporarily moved.

303

See Other

The response to the request can be found under a different URI.

It 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

Bad Request

The request is invalid.

The client should not repeat the request without modifications.

401

Unauthorized

The authorization information provided by the client is incorrect or invalid.

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 server understands the request, but refuses 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

A request method is not supported for the requested resource.

The client should not repeat the request without modifications.

406

Not Acceptable

The server could not fulfil the request according to the content characteristics of the request.

407

Proxy Authentication Required

This status code is similar to 401, but 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 later.

409

Conflict

The request could not be completed due to a conflict with the current state of the resource.

The resource that the client attempts to create already exists, or the update request fails to be processed because of a conflict.

410

Gone

The requested resource does not exist.

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 refuses to process a request because the request entity is too large. The server may disable the connection to prevent the client from sending requests consecutively. If the server cannot process the request temporarily, the response will contain a Retry-After field.

414

Request-URI Too Large

The request URI is too long for the server to process.

415

Unsupported Media Type

The server cannot process the media format in the request.

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 time, or the server has received more requests than it is able to process within a given time. In this case, the client should repeat requests after the time specified in the Retry-After header of the response expires.

500

Internal Server Error

The server is able to receive the request but unable to understand the request.

501

Not Implemented

The server does not support the requested function.

502

Bad Gateway

The server acting as a gateway or proxy receives an invalid response from a remote server.

503

ServiceUnavailable

The requested service is invalid.

The client should not repeat the request without modifications.

504

ServerTimeout

The request cannot be fulfilled within a given time. This status code is returned to the client only when the Timeout parameter is specified in the request.

505

HTTP Version not supported

The server does not support the HTTP protocol version used in the request.