YouTube & partners resource targeting is defined as:
- All targeting assigned to a YouTube & partners line item or ad group.
- Advertiser targeting of YouTube URLs.
- Advertiser targeting that excludes content themes.
You can get this targeting with the API, but you can't create or update it.
When serving, YouTube & partners ads use targeting inherited from its parent resources. This behavior is the same as other resource types. Unlike other types, though, YouTube & partners resources don't surface inherited targeting. You must retrieve targeting from an ad's advertiser, line item, and ad group to construct its full targeting suite.