The source used to generate benchmarks metrics for. The ID of the source can be obtained from `https://developers.google.com/google-ads/api/reference/rpc/v26/BenchmarksService/ListBenchmarksSources`.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/services/benchmarks_service.proto)

| Fields ||
|---|---|
| ## `benchmarks_source_id` Union field. The ID of the chosen benchmarks source. `benchmarks_source_id` can be only one of the following: ||
| ### `all_advertisers` | `bool` Comparison against all advertisers running Ads. This benchmarking option must utilize additional filters. Setting the `category_filter` is required. One or more categories will scope the metrics of both the customer and all advertisers to those selected categories. |
| ### `industry_vertical_id` | `int64` The ID of the Industry Vertical. |