Multi-tenant mode requires an organization header on this request.
No `X-Organization-Id` and the deployment is multi-tenant (tenant-less writes fail closed).
Send X-Organization-Id: <org> (or use a tenant-scoped token / the pgwire door which carries per-connection org).
Every RelataDB error carries a correlation_id (UUIDv7). Cite it when reporting — ops cannot trace the request without it. See reporting errors.