state return

I am mailing in my state return for a refund.

Do i have to include all 1099 Div,INT, and 1099B forms?  or can i just send the w2?

when i did efile before i didnt have to include any 1099s. Are those mandatory?  i am getting a full refund from NJ because i lived in PA and tax was taken out in NJ.. until i flipped that a yr later.