## Create an ephemeral key nonce

Use `stripe.createEphemeralKeyNonce` in the [Issuing Elements](/issuing/elements.md) flow to create an ephemeral key nonce. Refer to our [integration guide](/issuing/elements.md#web-api-integration) for more details.

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

* `result.nonce`: the successful ephemeral key nonce.
* `result.error`: an error.
  Refer to the [API reference](/api/errors) for all possible errors.

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

- `options` (object) **required**
  Data to be sent with the request.

  - `issuingCard` (string) **required**
    The `id` of an existing [Issuing card](/api/issuing/cards/object.md). The nonce returned by this method can only be used to retrieve this Issuing card.

### Create ephemeral key nonce

```js
stripe
  .createEphemeralKeyNonce({
    issuingCard: 'ic_1ITi6XKYfU8ZP6raDAXem8ql'
  })
  .then(function(result) {
    // Handle result.error or result.nonce
  });
```