Moves an incident to any status (active, investigating, or resolved); there are no transition restrictions. resolved requires resolution_reason, and the other statuses reject resolution fields with a 422 that names the field. Returns 404 if the incident does not exist or belongs to another organization, and 409 if the status changed concurrently or the monitor has been deleted.
CloudZero records the change in the activity log, attributed to "Set via API", after saving it. If that log write fails, the status change still applies.