---
title: "introductoryOfferEligibility(compactJWS:)"
framework: storekit
role: symbol
role_heading: Type Method
path: "storekit/product/purchaseoption/introductoryoffereligibility(compactjws:)"
---

# introductoryOfferEligibility(compactJWS:)

Set the eligibility of an introductory offer for a purchase.

## Declaration

```swift
@backDeployed(before: iOS 18.4, macOS 15.4, tvOS 18.4, watchOS 11.4, visionOS 2.4)
static func introductoryOfferEligibility(compactJWS: String) -> Product.PurchaseOption
```

## Parameters

- `compactJWS`: The signed JWT string with the introductory offer eligibility for the purchase.