Background check for company

Hi guys,
I have a form to fill out for background check for company, and it asks my driver's license number.
I've been living in California but currently have WA license. So, do you guys think it's okay to put WA license on the form? The background check is done by a company call AccuSource. They don't seem to have any relation with any immigration department, and the background check will be basically criminal records, education, and credits records. What do you guys think?

why don't you go to CA dmv and get driver's license

My guess is because he can't get it here in California,in Washington u can get them if u can prove you live there and with your foreign passport and consulate card