If there are spaces remaining in any of the fields, the program interprets those spaces as data (even though you do not see any letters or numbers in that field).

To remove the spaces:

1. Highlight the data field with your mouse (even if it appears empty, you will highlight the spaces).
2. Press the Delete key, then the Enter key on your keyboard.
3. Repeat the steps above for all of the fields that need to be cleared.