## Confirm BECS Debit setup

Use `stripe.confirmAuBecsDebitSetup` in the [BECS Direct Debit Payments](/payments/au-becs-debit.md) flow when the customer submits your payment form.
When called, it will confirm the [SetupIntent](/api/setup_intents.md) with `data` you provide.
Note that there are some additional requirements to this flow that are not covered in this reference.
Refer to our [integration guide](/payments/au-becs-debit.md) for more details.

When you confirm a `SetupIntent`, it needs to have an attached [PaymentMethod](/api/payment_methods.md).
In addition to confirming the `SetupIntent`, this method can automatically create and attach a new `PaymentMethod` for you.
It can also be called with an existing `PaymentMethod`, or if you have already attached a `PaymentMethod` you can call this method without needing to provide any additional data.
These use cases are detailed in the sections that follow.

> Note that `stripe.confirmAuBecsDebitSetup` may take several seconds to complete.
> During that time, you should disable your form from being resubmitted and show a waiting indicator like a spinner.
> If you receive an error result, you should be sure to show that error to the customer, re-enable the form, and hide the waiting indicator.

`stripe.confirmAuBecsDebitSetup` will return a `Promise` which resolves with a `result` object.
This object has either:

* `result.setupIntent`: the successful [SetupIntent](/api/setup_intents).
* `result.error`: an error.
  Refer to the [API reference](/api/errors) for all possible errors.

**Syntax:** `stripe.confirmAuBecsDebitSetup(...)`

- `clientSecret` (string) **required**
  The [client secret](/api/setup_intents/object.md#setup_intent_object-client_secret) of the `SetupIntent`.

- `data` (object)
  Data to be sent with the request.
Refer to the [Setup Intents API](/api/setup_intents/confirm.md) for a full list of parameters.

  - `payment_method` (object | string)
    The `id` of an existing PaymentMethod or an object of collected data.
See use cases below for details.

### Use case: with payment data from an Element

Create and attach a new `PaymentMethod` with `stripe.confirmAuBecsDebitSetup` by passing an `auBankAccount` [Element](/js/element.md) to `payment_method[au_becs_debit]`.
The new `PaymentMethod` will be created with the data collected by the `Element` and will be used to confirm the `SetupIntent`.
Additionally, to create a BECS Direct Debit `PaymentMethod`, you are required to collect and include the account holder's name and the customer’s email address.

### Data argument properties

- `payment_method` (object) **required**
  Pass an `object` to confirm using data collected by an `auBankAccount`
Element.

  - `au_becs_debit` (Element) **required**
    An `auBankAccount` [Element](/js/element.md).

  - `billing_details` (Object) **required**
    The customer's [billing_details](/api/payment_methods/create.md#create_payment_method-billing_details).
`name` and `email` are required.

    - `name` (string) **required**
      The customer's name.

    - `email` (string) **required**
      The customer's email.

### Confirm with an Element

```js
stripe
  .confirmAuBecsDebitSetup('{SETUP_INTENT_CLIENT_SECRET}', {
    payment_method: {
      au_becs_debit: auBankAccountElement,
      billing_details: {
        name: 'John Smith',
        email: 'john.smith@example.com',
      },
    },
  })
  .then(function(result) {
    // Handle result.error or result.setupIntent
  });
```

```es_next
const {error, setupIntent} = await stripe.confirmAuBecsDebitSetup(
  '{SETUP_INTENT_CLIENT_SECRET}',
  {
    payment_method: {
      au_becs_debit: auBankAccountElement,
      billing_details: {
        name: 'John Smith',
        email: 'john.smith@example.com',
      },
    },
  },
);
```

### Use case: with an existing payment method

If you have already created a `PaymentMethod`, you can pass its `id` to `payment_method` when calling `stripe.confirmAuBecsDebitSetup` and it will be used to confirm the `SetupIntent`.

### Data argument properties

- `payment_method` (string) **required**
  The `id` of an existing `PaymentMethod`.

### Confirm with existing payment method

```js
stripe
  .confirmAuBecsDebitSetup('{SETUP_INTENT_CLIENT_SECRET}', {
    payment_method: '{PAYMENT_METHOD_ID}',
  })
  .then(function(result) {
    // Handle result.error or result.setupIntent
  });
```

```es_next
const {error, setupIntent} = await stripe.confirmAuBecsDebitSetup(
  '{SETUP_INTENT_CLIENT_SECRET}',
  {
    payment_method: '{PAYMENT_METHOD_ID}',
  },
);
```

### Use case: with self collected data

If you already know the customer’s BSB number and bank account number or want to collect it yourself, then you do not need to use the `auBankAccount` [Element](/js/element.md).
You can pass in the customer’s bank account information directly to create a new `PaymentMethod` and confirm the `SetupIntent`.
Additionally, to create a BECS Direct Debit `PaymentMethod`, you are required to collect and include the account holder's name and the customer's email address.

### Data argument properties

- `payment_method` (object) **required**
  Pass an object to confirm using data collected without an `Element`.

  - `au_becs_debit` (object) **required**
    An object of self-collected bank account data.

    - `bsb_number` (string) **required**
      A Bank State Branch (BSB) number.

    - `account_number` (string) **required**
      A bank account number.

  - `billing_details` (object) **required**
    The customer's [billing_details](/api/payment_methods/create.md#create_payment_method-billing_details).
`name` and `email` are required.

    - `name` (string) **required**
      The account holder's name.

    - `email` (string) **required**
      The customer's email.

### Confirm with self collected data

```js
stripe
  .confirmAuBecsDebitSetup('{SETUP_INTENT_CLIENT_SECRET}', {
    payment_method: {
      au_becs_debit: {
        bsb_number: '000000',
        account_number: '000123456'
      },
      billing_details: {
        name: 'John Smith',
        email: 'john.smith@example.com',
      },
    },
  })
  .then(function(result) {
    // Handle result.error or result.setupIntent
  });
```

```es_next
const {setupIntent, error} = await stripe.confirmAuBecsDebitSetup(
  '{SETUP_INTENT_CLIENT_SECRET}',
  {
    payment_method: {
      au_becs_debit: {
        bsb_number: '000000',
        account_number: '000123456'
      },
      billing_details: {
        name: 'John Smith',
        email: 'john.smith@example.com',
      },
    },
  },
);
```

### Confirm BECS Debit setup

```js
stripe
  .confirmAuBecsDebitSetup('{SETUP_INTENT_CLIENT_SECRET}', {
    payment_method: {
      au_becs_debit: auBankAccountElement,
      billing_details: {
        name: 'John Smith',
        email: 'john.smith@example.com',
      },
    },
  })
  .then(function(result) {
    // Handle result.error or result.setupIntent
  });
```

```es_next
const {error, setupIntent} = await stripe.confirmAuBecsDebitSetup(
  '{SETUP_INTENT_CLIENT_SECRET}',
  {
    payment_method: {
      au_becs_debit: auBankAccountElement,
      billing_details: {
        name: 'John Smith',
        email: 'john.smith@example.com',
      },
    },
  },
);
```