Deductions & credits

I was able to "Override" the type and amount fields on Line z, the summary line next to 24z, and the total on line 25 (see screenshot below)

Unfortunately, I was unable to "override" Line 26, so it did not total the Schedule 1 form nor put the correct amount on Form 1040 line 10.

So, I gave-up and put a negative "Additional Income" amount in Part 1.

This method may have an impact on our NY State Tax Return, which excludes the SSDI payment from income and is still crediting the negative Additional Income...

I agree that this should not be the way to handle this type of Adjustment to Income.