On Wednesday April 1st, 2020 existing metrics in the Ad Manager API's ReportService will start returning
net revenue instead of
gross revenue for Programmatic Guaranteed and Preferred Deals. If your application does not process Programmatic Guaranteed and Preferred Deals revenue data, no action is required.
This change will impact all API versions and reports run in the Ad Manager UI. For more information, see the
Ad Manager release notes for March 9th, and
this post on the Google Ads Developer Blog.