# X::LibTmux::Cardinality

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** Raku
- **Kind:** exception
- **Source:** https://github.com/libtmux/libtmux-raku/blob/0b5dd3d32e20f83a0069874e33eab0eb48f55962/lib/LibTmux/Exceptions.rakumod#L82
- **Bases:** [`X::LibTmux`](/en/raku/latest/reference/x-libtmux/), `Exception`
- **Page:** https://libtmux.org/en/raku/latest/reference/x-libtmux-cardinality/

Exact or optional cardinality was violated.

Exact or optional cardinality was violated.

## Members

### Other members

- [`count`](/en/raku/latest/reference/x-libtmux-cardinality-count/) (property): Exact number of captured matches which violated cardinality.
- [`entity`](/en/raku/latest/reference/x-libtmux-cardinality-entity/) (property): Entity schema associated with this failure.