Today we’re releasing an update to the Display & Video 360 API v1 which includes the following features:

• Advertiser targeting capabilities that allow you to add or remove channel, digital content label, and sensitive category targeting options for an advertiser. These targeting changes are then applied to all current and future campaigns.
• Targetable entity management that allows you to create and update Inventory Source Groups, Negative Keyword Lists, and Location Lists. Channels can now be updated as well, but not created.
• A new Creative entity field lineItemIds which is output only and lists the line items the creative is currently associated with. The Creatives service list method now supports this field in its filter parameter.

More detailed information about this update can be found on the Display & Video 360 API release notes page.

If you run into issues or need help using our new functionality, please contact us using our support contact form.
- Trevor Mulchay, Display & Video 360 API Team

Source: Google Ads Developer Blog