This not the same as the income exclusion under Notice 2014-7. That exclusion is taken in the federal return and Calif uses federal AGI so it's already excluded in your Calif return.
From the Calif Publication 1001:
California law allows an exclusion from gross income for IHSS
supplementary payments received by IHSS providers. IHSS
providers only receive a supplementary payment if they paid a
sales tax on the IHSS services they provide. The supplementary
payment is equal to the sales tax paid plus any increase in
the federal payroll withholding paid due to the supplementary
payment.
So only if you have
supplementary payments should you enter anything there.
