> [!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/ChangeEvent.ChangedResource).

A wrapper proto presenting all supported resources. Only the resource of the change_resource_type will be set.

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

| Fields ||
|---|---|
| ## `ad` | `Ad` Output only. Set if change_resource_type == AD. |
| ## `ad_group` | `AdGroup` Output only. Set if change_resource_type == AD_GROUP. |
| ## `ad_group_ad` | `AdGroupAd` Output only. Set if change_resource_type == AD_GROUP_AD. |
| ## `ad_group_asset` | `AdGroupAsset` Output only. Set if change_resource_type == AD_GROUP_ASSET. |
| ## `ad_group_bid_modifier` | `AdGroupBidModifier` Output only. Set if change_resource_type == AD_GROUP_BID_MODIFIER. |
| ## `ad_group_criterion` | `AdGroupCriterion` Output only. Set if change_resource_type == AD_GROUP_CRITERION. |
| ## `asset` | `Asset` Output only. Set if change_resource_type == ASSET. |
| ## `asset_set` | `AssetSet` Output only. Set if change_resource_type == ASSET_SET. |
| ## `asset_set_asset` | `AssetSetAsset` Output only. Set if change_resource_type == ASSET_SET_ASSET. |
| ## `campaign` | `Campaign` Output only. Set if change_resource_type == CAMPAIGN. |
| ## `campaign_asset` | `CampaignAsset` Output only. Set if change_resource_type == CAMPAIGN_ASSET. |
| ## `campaign_asset_set` | `CampaignAssetSet` Output only. Set if change_resource_type == CAMPAIGN_ASSET_SET. |
| ## `campaign_budget` | `CampaignBudget` Output only. Set if change_resource_type == CAMPAIGN_BUDGET. |
| ## `campaign_criterion` | `CampaignCriterion` Output only. Set if change_resource_type == CAMPAIGN_CRITERION. |
| ## `customer_asset` | `CustomerAsset` Output only. Set if change_resource_type == CUSTOMER_ASSET. |