The surface targeting combinations available for an ad product.

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

| Fields ||
|---|---|
| ## `available_targeting_combinations[]` | `https://developers.google.com/google-ads/api/reference/rpc/v26/SurfaceTargeting` Available surface target combinations for the ad product. |
| ## `default_targeting` | `https://developers.google.com/google-ads/api/reference/rpc/v26/SurfaceTargeting` Default surface targeting applied to the ad product. |