---
title: productIdentifier
framework: storekit
role: symbol
role_heading: Instance Property
path: storekit/skpayment/productidentifier
---

# productIdentifier

A string used to identify a product that can be purchased from within your app.

## Declaration

```swift
var productIdentifier: String { get }
```

## Mentioned in

Testing an interrupted purchase

## Discussion

Discussion The product identifier is a string previously agreed on between your app and the Apple App Store.

## See Also

### Getting Payment Details

- [quantity](storekit/skpayment/quantity.md)
- [requestData](storekit/skpayment/requestdata.md)
- [applicationUsername](storekit/skpayment/applicationusername.md)