Actually it is not only for S-corporations. That is just the line on the K-1 that they put the AMT Depreciation adjustment on. For P'ships, it is line 17A.
There are several different depreciation amounts for all property, not just rental property. There is Book (for GAAP), Tax, Alternative Minimum Tax (AMT), Adjusted Current Earnings (ACE, now same as AMT), Earnings & Profits (E&P) and State (some states allow bonus depreciation, some don't, so you will have a fed and state tax depreciation difference also.)
When I worked on large REITs, we had schedules for every one of these different depreciation rules. The only ones that apply to individuals will be Fed Tax, AMT & state tax.