Can I get help with a K-1?

I have inputted all the info from a K-1. I have an amount in box 16 I (Interest Expense). The error states "Sch K1 Partnership Additional Information 1: Fgn Tax Code 1 Ln 2 Col 3 is listed but no foreign source income at individual level has been listed on the K1 additioinal info worksheet line 1" Where would I get that information?