# LibTmux.Ref.validate/2

- **Module:** LibTmux
- **Package:** libtmux
- **Language:** Elixir
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-elixir/blob/66b9b1c3f3f3186428abdfda2c76f5cf87446710/lib/libtmux/ref.ex#L71
- **Page:** https://libtmux.org/en/elixir/latest/reference/libtmux-ref-validate-2/

```
validate(ref, instance)
@spec validate(t(), String.t()) ::
        :ok | {:error, LibTmux.Error.t()}
```

Rejects malformed references and known server-instance mismatches.

See the [worked example](api-examples.html#encoding-and-protocol).

## Parameters

- `ref` (`t()`)
- `instance` (`String.t()`)