That is where I am putting it. I posted on the PTO Facebook group and others have seen and replicated this same error. One person said they were given this workaround:

(a) click multi-state in client screen...i know that may not be correct but do it

(b) go back to w2 screen and scroll to your SDI input....then manually make CA in the dropdown.

It worked, but should not be required. This is very common and a simple calculation that should be done automatically so that when we are busy with dozens of returns we do not miss it. For my clients it resulted in a $500 savings in CA tax.