# not_revealable

> Key values are shown only once, at creation (or rotation), and stored hashed.

Source: https://tickwire.io/docs/errors/not_revealable/

HTTP 400.

**Likely cause:** An attempt to reveal an existing full, read-only or sandbox key: only a digest is stored.

**What to do:** Create a new key if you lost it, or rotate a read-only key to get a new value.

**Retry:** No. The same request gets the same answer; change something first.

Listed under [Keys, tokens and permissions](https://tickwire.io/docs/errors/#keys-tokens-and-permissions) in [Errors](https://tickwire.io/docs/errors/). Send the error's `requestId` to support and we can find the request.