State tax filing

Thanks @RogerD1  for the quick response.

Agreed, there are many categories of miscellaneous state tax addbacks that belong in line 1(e). Items such as bonus depreciation, QBI (which is applicable in my return), and so on.

Curious: Did you prepare the mock return using the desktop version of TurboTax Home & Business?

Here's what I tried for diagnostics:

I thought that maybe the presence of the QBI (which in itself triggers the program to activate line 1(e) for the misc addbacks) might be tripping it up, so I changed the federal return saying that the business did not qualify for QBI. That way, the program should just put the tax addback onto line 1(a) and line 1(e) should be totally blank.

Not successful. Very similar issue, here's the screenshots:

Here's the pdf of SC1040 showing the $1976 in 1(a) and $1978 in 1(e)

Here's the detail sheet showing how the $1976 value is calculated (this is part of the printed worksheets from the SC returns). I believe this to be correctly calculated.

Here's the main screen showing the "items that SC treats differently" - you can see that it has $1978 as "other additions" which is the code for line 1(e):

And then, if you click edit on that screen to see where the $1978 is coming from, you get this (which cannot be deleted):

As an aside, the $1976 that goes into line 1(a) (which I believe is correctly calculated via the worksheet and correctly placed on 1(a)) is neither accessible nor visible anywhere is the desktop front end. And the $1978 is only visible when pressing the edit key on the Other Additions screen.

Any other thoughts? I might try editing / overriding the forms directly. If that doesn't work I guess I'll have to manually print forms and file by mail.

Thanks and best regards

k2michelin