Details related to Smart campaigns that are not eligible to serve.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/services/smart_campaign_setting_service.proto)

| Fields ||
|---|---|
| ## `not_eligible_reason` | `https://developers.google.com/google-ads/api/reference/rpc/v25/SmartCampaignNotEligibleReasonEnum.SmartCampaignNotEligibleReason` The reason why the Smart campaign is not eligible to serve. |