AI-generated Key Takeaways
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          The provided content describes an Enum for possible criterion types. 
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          Criterion types include various targeting options such as keywords, placements, mobile app categories and applications, devices, locations, demographic information, YouTube content, and user interests. 
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          The list also includes criteria for exclusion, such as IP blocks and content labels. 
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          There are criterion types for specific campaign types like dynamic search ads (Webpage) and Smart Campaigns (Keyword Theme, Search Theme). 
Enum describing possible criterion types.
| Enums | |
|---|---|
| 
 | Not specified. | 
| 
 | Used for return value only. Represents value unknown in this version. | 
| 
 | Keyword, for example, 'mars cruise'. | 
| 
 | Placement, also known as Website, for example, 'www.flowers4sale.com' | 
| 
 | Mobile application categories to target. | 
| 
 | Mobile applications to target. | 
| 
 | Devices to target. | 
| 
 | Locations to target. | 
| 
 | Listing groups to target. | 
| 
 | Ad Schedule. | 
| 
 | Age range. | 
| 
 | Gender. | 
| 
 | Income Range. | 
| 
 | Parental status. | 
| 
 | YouTube Video. | 
| 
 | YouTube Channel. | 
| 
 | User list. | 
| 
 | Proximity. | 
| 
 | A topic target on the display network (for example, "Pets & Animals"). | 
| 
 | Listing scope to target. | 
| 
 | Language. | 
| 
 | IpBlock. | 
| 
 | Content Label for category exclusion. | 
| 
 | Carrier. | 
| 
 | A category the user is interested in. | 
| 
 | Webpage criterion for dynamic search ads. | 
| 
 | Operating system version. | 
| 
 | App payment model. | 
| 
 | Mobile device. | 
| 
 | Custom affinity. | 
| 
 | Custom intent. | 
| 
 | Location group. | 
| 
 | Custom audience | 
| 
 | Combined audience | 
| 
 | Smart Campaign keyword theme | 
| 
 | Audience | 
| 
 | Negative Keyword List | 
| 
 | Local Services Ads Service ID. | 
| 
 | Search Theme. | 
| 
 | Brand | 
| 
 | Brand List | 
| 
 | Life Event | 
| 
 | Webpage List | 
| 
 | Video lineup | 
| 
 | Placement List |