HTTP 503
quota_store_unavailable

Quota service unavailable

Comidoc could not read or update the request quota safely.

Resolution

Retry shortly. The API fails closed while quota state is unavailable.

Response handling

Keep the response's request_id for diagnostics. Retry only transient rate limits and 503 responses, respecting Retry-After with bounded exponential backoff and jitter. For monthly_quota_exceeded, stop polling until RateLimit-Reset or upgrade. Correct 400, 401, 403, and 406 requests before retrying.