# `DocuSign.Model.DocGenFormFieldValidation`
[🔗](https://github.com/neilberkman/docusign_elixir/blob/v3.4.0/lib/docusign/model/doc_gen_form_field_validation.ex#L5)

Describes how values are validated.

# `t`

```elixir
@type t() :: %DocuSign.Model.DocGenFormFieldValidation{
  errorMessage: String.t() | nil,
  expression: String.t() | nil
}
```

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