how do I fix an error from "check this entry" section?

I suggest you run the Federal and State Review.

• This will identify the specific areas that are of concern in your tax return.
• Be sure to correct every inquiry.
• To run the Review
  1. Go to the left sidebar menu
  2. Under Federal
  3. Select Federal Review
  4. Continue the interview.
  5. Answer each question.
  6. Once complete, do the same thing for the State.

This should clear any problems with the 1095-A