> ## Documentation Index
> Fetch the complete documentation index at: https://docs.byzly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Creating transactions

With the SDK installed, it's time to create a transaction.

## Initialize the SDK

To initialize the SDK, call the `.showPaymentSheet()` method on the SDK to open the payment sheet
to prompt the buyer to pay.

```js theme={"system"}
import EmbedReactNative from '@gr4vy/embed-react-native';

const handleCheckout = () => {
  EmbedReactNative.showPaymentSheet({
    gr4vyId: '[GR4VY_ID]',
    environment: 'sandbox',
    token: '[TOKEN]',
    amount: 1299,
    currency: 'AUD',
    country: 'AU',
    ...
  })
}

<Button onClick={handleCheckout}>Pay</Button>
```

<Note>
  Replace the `[GR4VY_ID]` with your instance identifier and `[TOKEN]` with the JWT created in step 2.
  Additional [options](/guides/payments/react-native/options) can be provided when launching the SDK.
</Note>

## Handle events

Once launched, the SDK sends events when a transaction was created and for some failures.
To handle these events, add a new event listener to the SDK.

```js theme={"system"}
import { EmbedReactNativeEventEmitter, Gr4vyEvent } from '@gr4vy/embed-react-native';

const onEvent = (event: Gr4vyEvent) => {
  const { name, data } = event
  console[name === 'generalError' ? 'error' : 'log'](name, data)
}

useEffect(() => {
  const onEventSubscription = EmbedReactNativeEventEmitter.addListener(
    'onEvent',
    onEvent
  )

  return () => {
    onEventSubscription.remove()
  }
}, [])
```

<Info>
  Learn more about the events triggered by the React Native SDK in the [events](/guides/payments/react-native/events) guide.
</Info>