What does the 4562 titled "Alternative Minimum Tax Depreciation" show? If it shows a zero or is blank, enter a zero. There has to be a digit in that box, even if that digit is zero. But that digit also has to be correct.
Now I don't recall if this applies to a rental asset, but I do recall on a screen for some type of asset (maybe a SCH C business asset) where there was a "note:" on the screen telling you that if no AMT depreciation was taken, then enter the same figure that you did in the top box. So read the small print on that screen. If present, the small print matters.
