On the Form 1040 Line 24 is a calculated number based on Lines 16 thru 23. Which of those Line numbers is the IRS indicating as incorrect?
The tax on the taxable income on Line 16?
Child Tax Credits from Schedule 8812?
The amount from Schedule 2 Line 3?
The amount from Schedule 3 Line 8?
Other taxes, including self-employment taxes from Schedule 2 Line 21?
line 24 is the sum of lines 16,17 and 23 less lines 19 and 20. we don't know which line has the error. some are compute based on what you entered. in any case Turbotax never pays the additional taxes, since you would owe those anyway, only penalties and interest if it's their calculation error. you can file a claim