Recommendation to raise Target CPA.

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

| Fields ||
|---|---|
| ## `app_bidding_goal` | `https://developers.google.com/google-ads/api/reference/rpc/v25/AppBiddingGoalEnum.AppBiddingGoal` Output only. Represents the goal towards which the bidding strategy should optimize. Only populated for App Campaigns. |
| ## `target_adjustment` | `https://developers.google.com/google-ads/api/reference/rpc/v25/Recommendation.TargetAdjustmentInfo` Output only. The relevant information describing the recommended target adjustment. |