is used by a server to signal that the resource is transparently negotiated.
Quick facts
Description
is used by a server to signal that the resource is transparently negotiated.
Syntax
TCN: <value>
Related status codes
Frequently asked questions
is used by a server to signal that the resource is transparently negotiated.
It is classified as a response header and can appear in requests or responses depending on context.
Sources & standards
Updated 2026-08-18
Explore this reference