# `Stripe.Params.V2.Core.AccountUpdateParams.Identity.BusinessDetails.Documents.ProofOfUltimateBeneficialOwnership`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/v2/core/account_update_params.ex#L1691)

Nested parameters.

# `t`

```elixir
@type t() ::
  %Stripe.Params.V2.Core.AccountUpdateParams.Identity.BusinessDetails.Documents.ProofOfUltimateBeneficialOwnership{
    files: [String.t()] | nil,
    type: String.t() | nil
  }
```

* `files` - One or more document IDs returned by a [file upload](https://docs.stripe.com/api/persons/update#create_file) with a purpose value of `account_requirement`.
* `type` - The format of the document. Currently supports `files` only. Possible values: `files`.

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