# libtmux.workspace:invalid-workspace

**Workspace Manager concept example** A working example of the core library. It can change without notice.

- **Package:** libtmux/workspace
- **Language:** Common Lisp
- **Kind:** exception
- **Source:** https://github.com/libtmux/libtmux-lisp/blob/c2e5fc4ed3befda21f45dfa5d5868c38fd138311/src/workspace.lisp#L76
- **Public owner:** libtmux.workspace
- **Bases:** [`libtmux.workspace:workspace-error`](/en/lisp/latest/workspace/reference/libtmux-workspace-workspace-error/)
- **Page:** https://libtmux.org/en/lisp/latest/workspace/reference/libtmux-workspace-invalid-workspace/

Native workspace data violates the closed workspace grammar.