Enter 2020 taxes paid in 2 areas?

Do I enter 2020 self-employed and state & federal taxes paid in 2 places or 1? There is a place to enter these under business deductions and then again under the personal tab under deductions. In other words, these entries would be on Schedule C  AND the back page of the 1040 form under deductions. It changes the taxes owed, so I'm confused.