Simplest way is to delete "EVERYTHING" in the SCH E section and re-enter it anew, correctly the 2nd time since you are now aware of what your error was the first time.
Assuming you have an entry for the rental and another for the royalty, as you start working through the SCH E section you'll get to a screen that list them. Click the DELETE button next to each (or just next to the one causing the issues) and delete it. Then continue working through the SCH E section until you get to a screen with a DONE button on it, and click that DONE button. Changes do not stick until you actually click the DONE button.
Then you can re-enter the data again by entering the SCH E section again and when you get to the screen with "Add Another Rental or Royalty" on it, click that button and press on to re-enter the data.
