Where can I find the info for Schedule K-1 Form 1065 Box 11 Code A?

I entered in all the info from Form 1065, and during review, TurboTax is prompting me to check the entry.  "Other Income Code A Line 1 has no entry.  A total of x has been entered for code A.  Code A is a generic and does not indicate the specific nature of the item.  Please enter x on the appropriate line or lines in this section."

I'm given three options with REMIC, Other Portfolio Income (Loss), and Another Description Item.  The partnership isn't real estate, so I'm not sure what to put.