You must have answered something incorrectly in MY INFO.
Make sure you have entered your child as a dependent in My Info, and that you have entered the child's Social Security number.
Careful— do not say that your child’s SSN is not valid for employment.
If your child was born in 2024 make sure you said he lived with you the whole year.
There is an oddly worded question that asks if the child paid over half their own support. Say NO to that question.
Look at your 2024 Form 1040 to see the child-related credits you received
PREVIEW 1040
Child Tax Credit line 19
Credit for Other Dependents line 19
Earned Income Credit line 27
Additional Child Tax Credit line 28
You need to go through the dependent interviews for both children. It sound like they are listed as dependents, but not as qualifying child dependents. Carefully answer those questions. Confirm their birthdates and SSNs are correct and entered into TurboTax. The questions are based on the Qualifying Child Requirements, which are below. More Info on the 5 Tests to Qualify a Child as a Dependent.