> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/EnableOperation).

A single enable operation of a campaign.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/services/campaign_service.proto)

| Fields ||
|---|---|
| ## `accent_color` | `string` Optional. Hex code representation of the accent brand color, for example #00ff00. accent_color is required when main_color is specified. |
| ## `auto_populate_brand_assets` | `bool` Required. The switch to automatically populate top-performing brand assets. This field is required. If true, top-performing brand assets will be automatically populated. If false, the brand_assets field is required. |
| ## `brand_assets` | `BrandCampaignAssets` Optional. The brand assets linked to the campaign. This field is required when the value of auto_populate_brand_assets is false. |
| ## `campaign` | `string` Required. The resource name of the campaign to enable. |
| ## `final_uri_domain` | `string` Optional. The domain of the final uri. |
| ## `font_family` | `string` Optional. The font family is specified as a string, and must be one of the following: "Open Sans", "Roboto", "Roboto Slab", "Montserrat", "Poppins", "Lato", "Oswald", or "Playfair Display". |
| ## `main_color` | `string` Optional. Hex code representation of the main brand color, for example #00ff00. main_color is required when accent color is specified. |