> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/ListingGroupFilterListingSourceEnum.ListingGroupFilterListingSource).

The source of listings filtered by a listing group filter node.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/enums/listing_group_filter_listing_source.proto)

| Enums ||
|---|---|
| ## `RETAIL` | Used for Retail Product Tags. |
| ## `SHOPPING` | Listings from a Shopping source, like products from Google Merchant Center. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `WEBPAGE` | Listings from a webpage source, like URLs from a page feed or from the advertiser web domain. |