# libtmux:field-unavailable

- **Package:** libtmux
- **Language:** Common Lisp
- **Kind:** exception
- **Source:** https://github.com/libtmux/libtmux-lisp/blob/c2e5fc4ed3befda21f45dfa5d5868c38fd138311/src/conditions.lisp#L91
- **Public owner:** libtmux
- **Bases:** [`libtmux:libtmux-error`](/en/lisp/latest/reference/libtmux-libtmux-error/)
- **Page:** https://libtmux.org/en/lisp/latest/reference/libtmux-field-unavailable/

The field is unregistered for this model or its relation is unloaded.

## Guides

Pages that discuss `field-unavailable`.

### Concepts

- [Captures and identity](/en/lisp/latest/concepts/captures/)

### Guides

- [Native queries](/en/lisp/latest/guides/queries/)