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431

Request Header Fields Too Large

Client Error
RFC 6585

The server is unwilling to process the request because its header fields are too large.

Detailed Information

The 431 status code indicates that the server is unwilling to process the request because its header fields are too large.

Common Examples

  • API requests with large header fields
  • Web page requests with large header fields

Common Uses

  • API requests with large header fields
  • Web page requests with large header fields

Best Practices

  • Use when the request header fields are too large
  • Include a detailed error message
  • Ensure proper request handling and header field validation

Quick Actions

Category Information

Client Error

The request contains bad syntax or cannot be fulfilled

Related Status Codes

3 similar
400

Bad Request

The server cannot or will not process the request due to something that is perceived to be a client error.

401

Unauthorized

The request requires user authentication.

402

Payment Required

Reserved for future use.

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HTTP Status Codes Reference - Complete List with Descriptions