<!--
{
  "availability" : [
    "iOS: 15.4.0 -",
    "iPadOS: 15.4.0 -",
    "macCatalyst: 15.4.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "StoreKitTest",
  "identifier" : "/documentation/StoreKitTest/SKAdTestSession/developerPostbackURL",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "StoreKit Test"
    ],
    "preciseIdentifier" : "c:objc(cs)SKAdTestSession(py)developerPostbackURL"
  },
  "title" : "developerPostbackURL"
}
-->

# developerPostbackURL

The URL that SKAdNetwork computes to send copies of winning postbacks to the advertised app’s developer.

```
var developerPostbackURL: URL? { get }
```

## Discussion

Use this property to view the URL that <doc://com.apple.documentation/documentation/StoreKit/SKAdNetwork> computes to send a copy of the winning postback to the developer. This property has a valid URL only if you specify a valid URL in the <doc://com.apple.documentation/documentation/BundleResources/Information-Property-List/NSAdvertisingAttributionReportEndpoint> key in your app’s `Info.plist`. For more information, see <doc://com.apple.documentation/documentation/StoreKit/configuring-an-advertised-app>.

> Note:
> The testing environment doesn’t use this URL. <doc://com.apple.documentation/documentation/StoreKit/SKAdNetwork> sends copies of winning postbacks in the production environment only.

---

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)