# `Stripe.Params.CouponUpdateParams`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/coupon_update_params.ex#L2)

Parameters for coupon update.

# `t`

```elixir
@type t() :: %Stripe.Params.CouponUpdateParams{
  currency_options:
    %{
      required(String.t()) =>
        Stripe.Params.CouponUpdateParams.CurrencyOptions.t()
    }
    | nil,
  expand: [String.t()] | nil,
  metadata: map() | nil,
  name: String.t() | nil
}
```

* `currency_options` - Coupons defined in each available currency option (only supported if the coupon is amount-based). Each key must be a three-letter [ISO currency code](https://www.iso.org/iso-4217-currency-codes.html) and a [supported currency](https://stripe.com/docs/currencies).
* `expand` - Specifies which fields in the response should be expanded.
* `metadata` - Set of [key-value pairs](https://docs.stripe.com/api/metadata) that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to `metadata`.
* `name` - Name of the coupon displayed to customers on, for instance invoices, or receipts. By default the `id` is shown if `name` is not set. Max length: 40.

---

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