HTTP 403 · type invalid_request_error · retryable false

defaultMessage Live send is not enabled for this account.

live_send_not_enabled

Live Graph delivery is not enabled for this workspace / environment.

What to do

1. Confirm you are using a live key (tk_live_…) only when live send is intentionally enabled.
2. Ask a Tecron admin to enable PUBLIC_API_LIVE_SEND (or the equivalent workspace gate) for production.
3. Use a test key for integration development until live send is approved.
4. Do not treat this as a transient 5xx — fix configuration before retrying live traffic.