@naru Thank you for your reply. I saw @MaryK4 's screenshot. In her screenshots, Turboxtax warns you if you entered excessive contribution for your Elective Deferrals (or Catch-up Contribution). The problem I was reporting is for "Employer Match" part as you can see in my screenshot. If you enter excessive amount in "Employer Match", turnbox doesn't warn you at all. My screenshot is the last screen for "Your Retirement Contributions".
