Ad group engine ID
The identifier that an engine creates and assigns to an ad group. Note that DoubleClick Search (DS) creates its own ID for each ad group that it manages.Add this column to a report
Navigate to an advertiser and click the Ad groups tab.
Optionally navigate to a lower scope and click the Ad groups, Ads, or Keywords tab.
Click the Columns button above the performance summary graph.
Next to Available columns, type the column name in the search box and press the Enter key.
Click + next to the column name in the Available columns list.