Can't resolve an error, it keeps asking for input

Hi,

In my state form for California, Sch C, Car & Truck form, it keeps asking for an input for line 2 (date placed in service), the field being yellow and the desktop program keeps on asking for input.

But I didn't used my car in this tax year for business, so I don't want/need to input something here.

(Extra info: I had filled out some info in the Federal return form for my car before realizing I hadn't used my car, so I deleted everything. The Federal form shows no input, but the CA one keeps asking for input.)

Please advice what to do so I can file my return.

Thanks,

E.