# X_TOKEN_UNKNOWN

## Means

design token role does not exist

## Typical cause

a typo, or a raw colour that was never a token; a `defineTheme()` override of a role, radius or font slot that is not in the scale; or — as a Sass `@error`, so the stylesheet does not compile — a breakpoint rung handed to `respond-to` / `respond-down` / `respond-between` that is not in `$breakpoints`

## Fix

use a role from `@ultimat3/ui` tokens; for a breakpoint, one of `sm md lg xl 2xl` — the `@error` lists them; see [Theming](/theming)

[UI](/error-codes#ui)