Deductions & credits

You are correct, a foreign address can't be entered as per the Learn More links.   You can enter your foreign address in Forms mode on the CA Information Worksheet.   If you use FM as the state, you are able to enter the details on the form so you can e-file.   You will still need to enter your CA zip code in that field, as it requires a US zip code format.  

But you can use the address and city lines to populate your foreign address, so the state of CA will have it and you can still e-file the return.   The learn more links will be updated; thank you!