The server has reached `RELATA_MAX_WATCH_SUBSCRIPTIONS`.
Each WATCH re-evaluates on every commit; the cap protects commit latency.
Close unused subscriptions, or raise the cap on a write-light workload.
RELATA_MAX_WATCH_SUBSCRIPTIONS
Every RelataDB error carries a correlation_id (UUIDv7). Cite it when reporting — ops cannot trace the request without it. See reporting errors.