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# CredentialNoRefreshHandlerWarning

> Emitted when a credential expires but no refresh() handler is supplied.

Emitted when a credential has an `expiry_at` but the provider supplies no
[`refresh()`](/docs/browser-sdk/v4/reference/interfaces/credential-provider)
handler. The session will terminate at expiry with no fallback.

Implementors who want long-lived sessions must provide a `refresh()` handler or
mint tokens with the `sat:refresh` scope (Client Bound SAT path). Subscribe via
[`client.warnings$`](/docs/browser-sdk/v4/reference/signalwire/warnings\$).

## **Properties**

**`code`** `"credential_no_refresh_handler"` — required

Discriminant identifying this warning.

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**`source`** `"CredentialProvider"` — required

The SDK subsystem that emitted the warning.

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**`message`** `string` — required

Human-readable description of the warning.

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**`expiresAt`** `number` — required

Token expiry timestamp (epoch milliseconds).

---

> Emitted when a credential expires but no refresh() handler is supplied.