# `MishkaGervaz.Table.Verifiers.ValidateLayout`
[🔗](https://github.com/mishka-group/mishka_gervaz/blob/v0.0.1-alpha.3/lib/mishka_gervaz/table/verifiers/validate_layout.ex#L1)

Validates the chrome entities (header, footer, notice) declared inside
the table layout section.

Ensures that:
- Notice names are unique
- Notice positions are valid atoms or `{:before_column, name}` /
  `{:after_column, name}` tuples that reference an existing column

See `MishkaGervaz.Table.Dsl.Layout`,
`MishkaGervaz.Table.Entities.Notice`,
`MishkaGervaz.Table.Verifiers.Helpers`, and sibling verifiers.

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*Consult [api-reference.md](api-reference.md) for complete listing*