Enum describing the possible placements of an asset.

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

| Enums ||
|---|---|
| ## `AD_IMAGE` | The asset is linked for use to select an ad image. |
| ## `BOOK_ON_GOOGLE` | The asset is linked to indicate that a hotels campaign is "Book on Google" enabled. |
| ## `BUSINESS_LOGO` | The asset is linked for use as a business logo. |
| ## `BUSINESS_MESSAGE` | The asset is linked for use as a Business Message. |
| ## `BUSINESS_NAME` | The asset is linked for use as a business name. |
| ## `CALL` | The asset is linked for use as a Call extension. |
| ## `CALLOUT` | The asset is linked for use as a Callout extension. |
| ## `CALL_TO_ACTION` | The asset is linked for use as a call-to-action. |
| ## `CALL_TO_ACTION_SELECTION` | The asset is linked for use to select a call-to-action. |
| ## `DEMAND_GEN_CAROUSEL_CARD` | The asset is linked for use as a Demand Gen carousel card. |
| ## `DESCRIPTION` | The asset is linked for use as a description. |
| ## `HEADLINE` | The asset is linked for use as a headline. |
| ## `HOTEL_CALLOUT` | The asset is linked for use as a Hotel Callout extension. |
| ## `HOTEL_PROPERTY` | The asset is linked for use as a hotel property in a Performance Max for travel goals campaign. |
| ## `LANDING_PAGE_PREVIEW` | The asset is linked for use as a landing page preview image. |
| ## `LANDSCAPE_LOGO` | The asset is linked for use as a landscape logo. |
| ## `LEAD_FORM` | The asset is linked for use as a Lead Form extension. |
| ## `LOGO` | The asset is linked for use as a logo. |
| ## `LONG_DESCRIPTION` | The asset is linked for use as a long description. |
| ## `LONG_HEADLINE` | The asset is linked for use as a long headline. |
| ## `MANDATORY_AD_TEXT` | The asset is linked for use as mandatory ad text. |
| ## `MARKETING_IMAGE` | The asset is linked for use as a marketing image. |
| ## `MEDIA_BUNDLE` | The asset is linked for use as a media bundle. |
| ## `MOBILE_APP` | The asset is linked for use as a Mobile App extension. |
| ## `PORTRAIT_MARKETING_IMAGE` | The asset is linked for use as a portrait marketing image. |
| ## `PRICE` | The asset is linked for use as a Price extension. |
| ## `PROMOTION` | The asset is linked for use as a Promotion extension. |
| ## `RELATED_YOUTUBE_VIDEOS` | The asset is linked for use as related YouTube videos. |
| ## `SITELINK` | The asset is linked for use as a Sitelink. |
| ## `SQUARE_MARKETING_IMAGE` | The asset is linked for use as a square marketing image. |
| ## `STRUCTURED_SNIPPET` | The asset is linked for use as a Structured Snippet extension. |
| ## `TALL_PORTRAIT_MARKETING_IMAGE` | The asset is linked for use as a tall portrait marketing image. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `VIDEO` | The asset is linked for use as a non YouTube logo. |
| ## `YOUTUBE_VIDEO` | The asset is linked for use as a YouTube video. |