It is the federal employer
identification number that must be
included on every information return according to the Internal Revenue
Service.
However, the TurboTax program
will require you to enter a state number. Either you can enter the federal
identification number (in the state's format), or you can create one and
include any spaces or hyphens when applicable (e.g. CA 80486884 or in this format
CA 000-0000-0) This should allow you to continue completing
your tax return.