invalid_signature

A hold release was not signed with the holding hook's secret.

HTTP 401.

Likely cause: Wrong secret, missing headers, or a stale timestamp.

What to do: Sign with X-Tickwire-Hook-Id, X-Tickwire-Timestamp and X-Tickwire-Signature.

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

Listed under Pre-trade hooks, holds and kill switches in Errors. Send the error’s requestId to support and we can find the request.