Why do I need Form 3554?

[TerryA]

You may not. Here's the form: https://www.ftb.ca.gov/forms/2018/18_3554.pdf
and here's the instruction booklet: https://www.ftb.ca.gov/forms/2018/18_3554bk.pdf

If that doesn't apply to you then you may have inadvertently entered a credit amount for it in the TT/Calif Credits section. If that's the case then go back there and remove your entry(ies) for anything concerning that Form.