A name can be reserved for a period of 60 days. For faster service, name reservations can be submitted online through our enhanced online services."Business entity identifier" means one or more letters or words denoting existence as a business entity. Learn how to choose the perfect name for your LLC in California. Our ultimate guide covers legal requirements, tips, and best practices. Learn what you need to know about naming an LLC in California with Bizee's helpful resources. Pick your perfect business name today! This guide explains in clear terms exactly how and when to register your business name in California. Complete a Fictitious Business Name Statement form, available from your county clerk's office. Under California law, LLCs can't choose a name that's so similar to another business's name that it would cause confusion for the public.