> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v23** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/AssetGroupSignalOperation).

A single operation (create, remove) on an asset group signal.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/services/asset_group_signal_service.proto)

| Fields ||
|---|---|
| ## `exempt_policy_violation_keys[]` | `PolicyViolationKey` Optional. The list of policy violation keys that should not cause a PolicyViolationError to be reported. Not all policy violations are exemptable, refer to the is_exemptible field in the returned PolicyViolationError. Resources violating these polices will be saved, but will not be eligible to serve. They may begin serving at a later time due to a change in policies, re-review of the resource, or a change in advertiser certificates. |
| ## `operation` Union field. The mutate operation. Update is not supported. `operation` can be only one of the following: ||
| ### `create` | `AssetGroupSignal` Create operation: No resource name is expected for the new asset group signal. |
| ### `remove` | `string` Remove operation: A resource name for the removed asset group signal is expected, in this format: `customers/{customer_id}/assetGroupSignals/{asset_group_id}~{criterion_id}` |