> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v25** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/SkAdNetworkSourceTypeEnum.SkAdNetworkSourceType).

Enumerates SkAdNetwork source types

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/sk_ad_network_source_type.proto)

| Enums ||
|---|---|
| ## `MOBILE_APPLICATION` | The ad was shown on an app. |
| ## `UNAVAILABLE` | The source app ID or source domain was not present in the postback or we do not have this data for other reasons. |
| ## `UNKNOWN` | The value is unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `WEBSITE` | The ad was shown on a webpage. |