I'm in CA, and our depreciation rules are so different that we do have state module depreciation schedules. But not all states do have them. I admittedly don't know about PA and SC, but if you don't have fed/state differences in the amount of depreciation taken fed vs. SC, maybe SC doesn't need its own depr schedules?

Another thought, in the depr screen, go to batch entry mode (CTRL+W).  That will help you quickly make sure every dollar amount of basis and prior depr and curr depr did actually get sourced to SC and not PA or US.  There's a lot to make sure and catch on Screen 22.