HTTP 503
quota_store_unavailableQuota 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.