---
title: applicationData
framework: applepayontheweb
role: symbol
role_heading: Instance Property
path: applepayontheweb/applepayrequestbase/applicationdata
---

# applicationData

Application-specific data or state you can add to support your app.

## Declaration

```data
DOMString applicationData;
```

## Discussion

Discussion Use this property for additional data as may be appropriate for your app—for example, a shopping cart identifier or an order number. The signed payment data (the paymentData property of PKPaymentToken) includes a hash of this data. You’re responsible for sending the full application data to your server, if needed.