State tax filing

I need clarification please.  If I spend $250 on eligible supplies, do I enter them twice in TurboTax?  Once while going through the Federal interview and once when going through the State interview?

 

I've tried a combination of neither, both, just fed, or just IL and get unexpected results that don't make it clear.  While entering the expenses in Federal only the tax benefit is less than if I only enter it in the State.  Of course if I only enter in the State then I don't get any Federal credit.  If I enter in both then the benefit is greater than the $250.