A relationship between an ad group criterion and a label.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/resources/ad_group_criterion_label.proto)

| Fields ||
|---|---|
| ## `ad_group_criterion` | `string` Immutable. The ad group criterion to which the label is attached. |
| ## `label` | `string` Immutable. The label assigned to the ad group criterion. |
| ## `resource_name` | `string` Immutable. The resource name of the ad group criterion label. Ad group criterion label resource names have the form: `customers/{customer_id}/adGroupCriterionLabels/{ad_group_id}~{criterion_id}~{label_id}` |