California form 592-B

I'm an Ohio resident. I'm a financial advisor and have a new 2021 California client. My company sent me a 592-B.  I have my Federal and Oh State taxes completed and am wondering what I do with this 592-B? Do I fill out a paper 540nr and send it to California?  I'm just confused on the whole process. The amount of tax withheld was under $100.