The impact of making the change as described in the recommendation. Some types of recommendations may not have impact information.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/resources/recommendation.proto)

| Fields ||
|---|---|
| ## `base_metrics` | `https://developers.google.com/google-ads/api/reference/rpc/v23/Recommendation.RecommendationMetrics` Output only. Base metrics at the time the recommendation was generated. |
| ## `potential_metrics` | `https://developers.google.com/google-ads/api/reference/rpc/v23/Recommendation.RecommendationMetrics` Output only. Estimated metrics if the recommendation is applied. |