I have one W2 with two California Employers ID number. In filling out Box 15 it will not allow the same state for each employer ID from the same state.

[kevoc02]

I have one W2 from Employment service company. I have two seperate employers who use that company. The employment company sent me one W2 with all wages and taxes combined in boxes 1-6 in box 15 the state is California for both employers ID number it will not allow me to have California twice.

[DaveF1006]

Combined the state information and use the EIN for the employment service company for the state.