Deductions & credits

@Carl   So I know I owe the depreciation recapture for all the years I had a home office, even though I took it only 1 year. 

 

However, when I put in the amount for depreciation  in the first box, the 2nd box still say "MUST fill out this one also" etc.....

 

so do I put in an amount for the first one  and then Zero for the 2nd AMT one? or do I just put in the full amount for both boxes?  both regular depreciation and AMT depreciation ?? Thanks!