Errors

Status	Meaning	Retry?
400	Invalid parameter: malformed id or unknown enum value	No. Fix the request
401	Missing, expired or invalid access token	Refresh the token, then retry once
403	Token is valid but the user is not permitted to perform this action	No
404	Resource does not exist, or belongs to another company	No
429	Rate limit exceeded	Yes, with exponential backoff
5xx	Qashio-side failure	Yes, with backoff and a capped attempt count

All data is scoped to the company bound to your access token. A resource belonging to another company returns 404, never another company’s data.

API 2.0 adds a structured errors[] array and a meta.request_id on every response: see Errors in 2.0.