Parameters to use when applying a Target ROAS opt-in recommendation.

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

| Fields ||
|---|---|
| ## `new_campaign_budget_amount_micros` | `int64` Optional, budget amount to set for the campaign. |
| ## `target_roas` | `double` Average ROAS (revenue per unit of spend) to use for Target ROAS bidding strategy. The value is between 0.01 and 1000.0, inclusive. This is a required field, unless new_campaign_budget_amount_micros is set. |