Are there CA state withholdings but no state ID?  If no state withholdings just use the Fed EIN in that box and Efile it.

If there are CA state withholdings and NO CA state ID number is shown, the CA refund will be delayed, FTB wont be able to match up the withholdings on the W2 with what's been reported to them by EDD.  The employer has to have an ID number in order to pay in the withholdings to EDD...Id be calling the employer to get that ID number.