Request message for `https://developers.google.com/google-ads/api/reference/rpc/v25/AudienceInsightsService/GenerateTargetingSuggestionMetrics`.

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

| Fields ||
|---|---|
| ## `audiences[]` | `https://developers.google.com/google-ads/api/reference/rpc/v25/InsightsAudience` Required. Audiences to request metrics for. `https://developers.google.com/google-ads/api/reference/rpc/v25/InsightsAudience#country_locations`, `https://developers.google.com/google-ads/api/reference/rpc/v25/InsightsAudience#gender`, `https://developers.google.com/google-ads/api/reference/rpc/v25/InsightsAudience#age_ranges` and `https://developers.google.com/google-ads/api/reference/rpc/v25/InsightsAudience#topic_audience_combinations` are the only supported fields for these audiences. Only `https://developers.google.com/google-ads/api/reference/rpc/v25/AudienceInsightsAttribute#user_interest` attributes are supported for topic_audience_combinations. |
| ## `customer_id` | `string` Required. The ID of the customer. |
| ## `customer_insights_group` | `string` Optional. The name of the customer being planned for. This is a user-defined value. |
| ## `insights_application_info` | `https://developers.google.com/google-ads/api/reference/rpc/v25/AdditionalApplicationInfo` Optional. Additional information on the application issuing the request. |