---
title: UnknownAnnotation
layout: analysis-message
owner: istio/wg-user-experience-maintainers
test: n/a
---

This message occurs when you attach an unrecognized annotation in the format `*.istio.io` to a namespace.

Istio only recognizes certain [annotation names](/docs/reference/config/annotations/).

To resolve this problem, check the name of your annotation and try again.