---
title: SKStoreProductParameterITunesItemIdentifier
framework: storekit
role: symbol
role_heading: Global Variable
path: storekit/skstoreproductparameteritunesitemidentifier
---

# SKStoreProductParameterITunesItemIdentifier

The key representing the iTunes identifier for the item you want the store to display when the view controller is presented.

## Declaration

```swift
let SKStoreProductParameterITunesItemIdentifier: String
```

## Mentioned in

Combining parameters to generate a signature for SKAdNetwork 1 Generating the signature to validate StoreKit-rendered ads

## Discussion

Discussion The value for this key, an iTunes item identifier, is an instance of NSNumber. To find a product’s iTunes identifier, go to linkmaker.itunes.apple.com and search for the product, then locate the iTunes identifier in the link URL. For example, the iTunes identifier for the iBooks app is 364709193.