# `configuration.secret_default`

Secret setting has a value in source.

Area 10, [Configuration and time](../topics/configuration-and-time.md); not declinable; the next step is usually the agent's.

```jadpo
type PartnerKey = Text {
    min_length: 8
}

config {
    api_key: PartnerKey {
        secret: true
        default: "development-key"
    }
}
```

```text
error: `api_key` is secret, and has a `default:` in source
 --> main.jadpo:8:9
  |
8 |         default: "development-key"
  |         ^^^^^^^ a secret written in source
  reason: A secret's value comes only from the deployment's environment, so a forgotten production secret stops the app instead of falling back to a value written in source; `jadpo test` generates its own for a test run, so it needs no `default:` either.
  next: Remove `default:` from `api_key` (agent)
  rule: configuration.secret_default
  help: https://jadpo.dev/docs/errors/configuration.secret_default

check failed: 1 error, 1 file
```