---
title: identifier
framework: storekit
role: symbol
role_heading: Instance Property
path: storekit/skproductdiscount/identifier
---

# identifier

A string used to uniquely identify a discount offer for a product.

## Declaration

```swift
var identifier: String? { get }
```

## Mentioned in

Generating a signature for promotional offers Implementing promotional offers in your app

## Discussion

Discussion You set up offers and their identifiers in App Store Connect.

## See Also

### Identifying the Discount

- [type](storekit/skproductdiscount/type-swift.property.md)
- [SKProductDiscount.Type](storekit/skproductdiscount/type-swift.enum.md)