Entity changed column
Displays the type of item such as campaign, keyword, or ad that was changed. The column also includes the name of the item. For example:
In the case of ads, the ad headline, line 1, line 2, and destination URL are shown. For example:
Red shoes on sale
Sale ends soon
You can filter the change history report using the entities or items shown in this column.
View this column in the change history report
List of change history entities