# `Stripe.Params.TestHelpers.Treasury.OutboundPaymentUpdateParams.TrackingDetails.Ach`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/test_helpers/treasury/outbound_payment_update_params.ex#L31)

Nested parameters.

# `t`

```elixir
@type t() ::
  %Stripe.Params.TestHelpers.Treasury.OutboundPaymentUpdateParams.TrackingDetails.Ach{
    trace_id: String.t() | nil
  }
```

* `trace_id` - ACH trace ID for funds sent over the `ach` network. Max length: 5000.

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