Description

The HTTP 203 Non-Authoritative Information response status indicates that the request was successful but the enclosed payload has been modified by a transforming proxy from that of the origin server's 200 OK response.

The 203 response is similar to the value 214, meaning Transformation Applied, of the Warning header code, which has the additional advantage of being applicable to responses with any status code.

See Also

• Spec
• Proxy server
• Warning, the header that triggers the 203 Non-Authoritative Information response

Source: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/203