SIGNING_KEY_INVALID

Meaning

This signing key cannot be used (missing, revoked, expired, or reserved for another application).

What to do

Check your signing key (validity, passwords, fingerprint) in the Signing area.

Keep the request_id field of the response: it lets support find the incident.

Example response

{
  "code": "SIGNING_KEY_INVALID",
  "message": "This signing key cannot be used (missing, revoked, expired, or reserved for another application).",
  "docs_url": "/errors/SIGNING_KEY_INVALID",
  "request_id": "01a0d2…"
}