---
title: version
framework: storekit
role: symbol
role_heading: Instance Property
path: storekit/skadimpression/version
---

# version

The version of the SKAdNetwork API.

## Declaration

```swift
var version: String { get set }
```

## Mentioned in

Generating the signature to validate view-through ads Identifying the parameters in install-validation postbacks

## Discussion

Discussion Set this instance property to the SKAdNetwork version you’re using to sign the view-through ad impression. View-through ads are available starting in version 2.2. For more information about versions and availability, see SKAdNetwork release notes.

## See Also

### Creating a signature

- [init(sourceAppStoreItemIdentifier:advertisedAppStoreItemIdentifier:adNetworkIdentifier:adCampaignIdentifier:adImpressionIdentifier:timestamp:signature:version:)](storekit/skadimpression/init(sourceappstoreitemidentifier:advertisedappstoreitemidentifier:adnetworkidentifier:adcampaignidentifier:adimpressionidentifier:timestamp:signature:version:).md)
- [adNetworkIdentifier](storekit/skadimpression/adnetworkidentifier.md)
- [sourceIdentifier](storekit/skadimpression/sourceidentifier.md)
- [adCampaignIdentifier](storekit/skadimpression/adcampaignidentifier.md)
- [advertisedAppStoreItemIdentifier](storekit/skadimpression/advertisedappstoreitemidentifier.md)
- [adImpressionIdentifier](storekit/skadimpression/adimpressionidentifier.md)
- [sourceAppStoreItemIdentifier](storekit/skadimpression/sourceappstoreitemidentifier.md)
- [timestamp](storekit/skadimpression/timestamp.md)