# Errors

## 401 — invalid_key

Runtime key missing, revoked or malformed.

## 403 — gate_required

The action needs a named governor. Runtime keys can never approve — by design.

## 409 — sequence_conflict

Your proposal was based on a stale sequence. Fetch state and re-propose.

## 422 — policy_violation

A proposed value breaches a configured rule; the violation names the rule.