# check_unavailable: The live check is unavailable

Status 503.

## Why it happens

A live check or an appraisal started, and what it reads from did not answer.

## What to do

Nothing was billed. Retry after `Retry-After`. Meanwhile `GET /names/{name}` answers the stored status.

API status: https://uniquedomains.instatus.com

## Example

`Retry-After: 60`

```json
{
  "type": "https://unique.domains/api/problems/check_unavailable",
  "title": "The live check is unavailable",
  "status": 503,
  "detail": "The live check did not answer. Nothing was billed; retry in a minute.",
  "instance": "/v1/names/harbor.io/check",
  "code": "check_unavailable"
}
```

All errors: https://unique.domains/api/problems