A criterion for targeting a shared set of rules for item groups in Vertical Ads (e.g., for hotel ads).

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/common/criteria.proto)

| Fields ||
|---|---|
| ## `shared_set` | `string` The shared set resource name of the vertical ads item group rule list. |