2xx Success

HTTP 203 Non-Authoritative Information

The request was successful but the returned metadata may be from a local or third-party copy rather than the origin server. This is mostly used by mirrors or backups of another resource.

Common Causes

  • Response modified by a transforming proxy
  • Cached copy served from a CDN with modified headers
  • Mirror server returning slightly different metadata

How to Fix

  1. 1No fix needed if the data is acceptable
  2. 2Request directly from the origin server for authoritative data
  3. 3Check proxy and CDN configuration if metadata accuracy matters

Example

HTTP 203 Non-Authoritative Information
GET /api/data HTTP/1.1

→ 203 Non-Authoritative Information
→ Data may differ from the origin server's version

Related Success Codes

200

OK

201

Created

202

Accepted

204

No Content

205

Reset Content

206

Partial Content

207

Multi-Status

208

Already Reported

226

IM Used