- Headline text
- Clickthrough URL
- Unique ID
- Reporting label
The correct answer is: Reporting label
Explanation: To start a new feed, you’ll need to add the following columns. Dynamic feeds can contain a maximum of 300,000 rows and 100 columns.
- Unique_ID: Each row of content must be populated with a unique value in this column. This column is used to track rows of content across feed and/or content changes.
- Reporting_Label: This column is used for dynamic reporting in Campaign Manager. Use the reporting label to differentiate content changes between rows.
Read more here:https://support.google.com/richmedia/answer/3399836