Box 15 has 2 California state ID's on one W-2

My son works for a pizza place in Hollywood.  His employer uses a PEO to process payroll and handle benefits, etc.  He worked for 2 branches of the pizza place that have 2 different CA State ID numbers.  The PEO gave him one W-2 but listed the earnings for each branch separately so boxes 15, 16, and 17 include two amounts. 

 

Turbo Tax will not let me e-file the CA state return because of this.  Is there a work around?  It seems to me that the PEO should have issued 2 W-2's, one for each branch of the pizza place.