If you are working in the desktop version of TurboTax you can use the Forms menu option to access the Schedule E worksheet. You can enter numbers on any box highlighted in yellow on that form. Any box that is blank you can right click on it to see if there is a magnifying glass icon to take you to the entry on another form or worksheet from which that number originated. If no such icon exits, you can use the "about" or "data source" options to learn where that number is being generated.