The same thing occurs in Turbo Tax 2020 (for the CA Form 540, Line 12). Turbo Tax seems to think I had a W-2 when I did not.
On line 12, I clicked on the box to open the details window.
I deleted the first row.
I closed the box and returned to Form 540.
The box for Line 12 no longer has a red $0.
The error is no longer an issue.
Save the return.
