The following was copied and pasted directly from the IRS instructions:
To assist the beneficiary in figuring any applicable passive activity loss limitations, also attach a separate schedule showing the beneficiary's share of directly apportionable deductions derived from each trade or business, rental real estate, and other rental activity.
Enter the beneficiary's share of directly apportioned deductions using codes A through C. Depreciation (code A).
Enter the beneficiary's share of the depreciation deductions directly apportioned to each activity reported in boxes 5 through 8.
See page 41: https://www.irs.gov/pub/irs-pdf/i1041.pdf
If you are entering your K-1 into TurboTax using Step-by-Step, you need to enter a dollar figure in that box.
