Hi there, CA_CPA.

Calfornia is one of the states that support the Combined Federal and State Filing (CF/SF) Program. Let me route you to this Help article for reference: What states support the Combined Federal and State Filing Program (1099)?

With regards to your second question, it's best to contact the CA Franchise Tax Board to check what format is required. 

In addition, you can also contact our QuickBooks Online 1099 Support for more details about the e-fling service. Check out this link to get their contact information: QuickBooks Online 1099 Support.

The Community is always here if you have other questions.