# customer_unresolved

URL: /evidence/errors/customer_unresolved · Id: `error:customer_unresolved`

> The Customer behind the Key could not be resolved, so the call has nowhere to be kept.

The `customer_unresolved` [Problem](/evidence/errors) means: the Customer behind the [Key](/callers/keys) could not be resolved, so the call has nowhere to be kept.

## Answer
| Status | Title |
| --- | --- |
| 503 | Service Unavailable |

```json
{
  "type": "about:blank",
  "title": "Service Unavailable",
  "status": 503,
  "detail": "What went wrong, in words.",
  "code": "customer_unresolved"
}
```

## Fix
Call again; nothing ran and the call cost nothing.