> [!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/TargetRestrictionOperation.Operator).

The operator.

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

| Enums ||
|---|---|
| ## `ADD` | Add the restriction to the existing restrictions. |
| ## `REMOVE` | Remove the restriction from the existing restrictions. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Unspecified. |