<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macOS: 12.0.0 -",
    "tvOS: 15.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 8.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "StoreKit",
  "identifier" : "/documentation/StoreKit/Product/PurchaseOption/introductoryOfferEligibility(compactJWS:)",
  "metadataVersion" : "0.1.0",
  "role" : "Type Method",
  "symbol" : {
    "kind" : "Type Method",
    "modules" : [
      "StoreKit"
    ],
    "preciseIdentifier" : "s:8StoreKit7ProductV14PurchaseOptionV28introductoryOfferEligibility10compactJWSAESS_tFZ"
  },
  "title" : "introductoryOfferEligibility(compactJWS:)"
}
-->

# introductoryOfferEligibility(compactJWS:)

Set the eligibility of an introductory offer for a purchase.

```
@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.

## Discussion

For information about generating and signing this JWT, see [Include custom claims for introductory offer eligibility](/documentation/StoreKit/generating-jws-to-sign-app-store-requests#Include-custom-claims-for-introductory-offer-eligibility).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)