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HTTP 510 — Not Extended

Further extensions to the request are required for the server to fulfill it.

Status CodeHTTP 510
CategoryServer Error (5xx)
API Error Subtypes0 error schemas
HTTP Headers0 headers

What does HTTP status code 510 mean?

The 510 Not Extended status code (RFC 2774) indicates that the server requires further protocol extensions to complete the request.

When to use it in APIs

Rarely used in modern REST APIs.

How it compares to other codes

  • 500 Internal Server Error: Represents standard application failures.

Specific API Error Types for 510

No specific Problem+JSON schemas have been defined for HTTP 510 on apiguide.dev yet.

Associated HTTP Headers

No specific HTTP headers are explicitly linked to HTTP 510 in our directory yet.

Related HTTP Status Codes

HTTP 500 — Internal Server Error

The server encountered an unexpected condition that prevented it from fulfilling the request.

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