404 application/problem+json
application/problem+json. Branch on type (a stable URI), not on title
or detail (human-readable, may change).
When it occurs
A key-management or usage request referenced akey_prefix that does not belong to your account (or was already deleted).
How to fix
List your keys viaGET /v1/keys to confirm the prefix. See API key management.
Not retryable — fix the request before resubmitting; retrying unchanged returns the same error.
See the full error catalog for the response shape and retry matrix.
Every response carries an x-request-id header — include it in any support request.