Itemization for Iowa state return

My husband and I file as married filing separately.  We both took the standard deduction on our Federal returns.  I want to itemize on my Iowa return but TurboTax  only allows me to take the standard deduction.  It asks me if my  husband is taking the standard state deduction.  When i answer Yes, TurboTax forces me to take the standard deduction.  When i answer no, my itemized deductions get applied.  Does IA require both spouses to choose the same filing status like the Federal level or is there a problem with the program?