An S-Corp doesn't HAVE an NOL.    S-Corps report out all income/loss/deductions annually via the K-1s.   IF there's a deductible loss flowing to the individual Form 1040, AND a net operating loss is generated on the individual F 1040, the individual can take advantage of the NOL carryback options.

If you need to amend the F 1120-S, there will be amended K-1's to distribute.