Editing Data List Mapping

From Data Management, click on the Data tab. After selecting the tab, a page of data lists will be shown below

Find the Data List you would like to edit, click the gear icon to the right of the list name and select Edit.

The right side of the screen will slide out and show you the list name, and all of the previously set column names and the data type mapping.

When you are done making changes, click the Update button to apply your changes.