> [!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/MutateCampaignBudgetsRequest).

Request message for `CampaignBudgetService.MutateCampaignBudgets`.

Update operations in `operations` require an `update_mask` specifying the fields to modify. Note that `explicitly_shared` defaults to `true` if unspecified. A non-shared budget can be updated to explicitly shared, but an explicitly shared budget cannot become non-shared.

[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_budget_service.proto)

| Fields ||
|---|---|
| ## `customer_id` | `string` Required. The ID of the customer whose campaign budgets are being modified. |
| ## `operations[]` | `CampaignBudgetOperation` Required. The list of operations to perform on individual campaign budgets. |
| ## `partial_failure` | `bool` If true, successful operations will be carried out and invalid operations will return errors. If false, all operations will be carried out in one transaction if and only if they are all valid. Default is false. |
| ## `response_content_type` | `ResponseContentType` The response content type setting. Determines whether the mutable resource or just the resource name should be returned post mutation. |
| ## `validate_only` | `bool` If true, the request is validated but not executed. Only errors are returned, not results. |