CA form 3800 with non resident parents

I'm helping my son with his taxes. We are all DC residents and I am claiming him as a dependent. My son attends school in CA and had income while he was there, including some income from a research stipend. The stipend is a taxable scholarship and I believe it's treated as unearned income. As a result my son has to file a non resident California return, including form 3800. He also has to file federal form 8615.

 

When filling out the information for form 3800, TT asks for information from the parents' CA return. We (the parents) aren't CA residents, had no income in California, and do not file a CA return. We have no connection to CA at all. So whenever TT asks for our information from form 540, do I just enter zero? Do I leave it blank?

 

If the answer is to enter zero, as I suspect, then I have a follow up question: Since we (the parents) don't make money in CA, aren't residents there and don't file a CA return, could filing my son's 3380 with zeroes for our information have any possible implications for us in CA?