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 429 and 503 responses, using the rate-limit headers and exponential backoff with jitter. Correct 400, 401, and 403 requests before retrying.