The forecasting set target ROAS recommendation.

[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 ||
|---|---|
| ## `campaign_budget` | `https://developers.google.com/google-ads/api/reference/rpc/v25/Recommendation.CampaignBudget` Output only. The campaign budget. |
| ## `recommended_target_roas` | `double` Output only. The recommended target ROAS (revenue per unit of spend). The value is between 0.01 and 1000.0, inclusive. |