My son is claimed on our tax return as a dependent. his return has rejected saying we need to add a 1095-a, but i'm reading he doesn't need to add that.

He needs to mark the box that says you are claiming him as a dependent (in the My Info section).   Click on edit next to his name in the My Info section to update his status as a dependent.   If you are being claimed as a dependent, TurboTax won't ask for a 1095-A.  

 

If you're listed as a dependent on your parents’ tax return, you won't have any health insurance questions to answer on your own return. TurboTax will tell you Since someone is claiming you on their 2023 taxes, you don't have to complete Health Insurance.   I'm on my parent's 1095-A

 

How to fix reject code F8962-070