Look at CA Schedule S Instructions:

D. California Nonresidents

California nonresident individuals, estates, or trusts that are residents of one of the following states or U.S. possessions and paid a net income tax to that state or U.S. possession on income that is also taxed by California may claim the other state tax credit:

Arizona (AZ), Guam (GU), Oregon (OR), and Virginia (VA).

California nonresidents who are residents of any state or U.S. possession not listed may not claim this credit. This credit is not allowed on a California group nonresident tax return.