I am going through cleaning up one of our databases, and after deleting an unused index and adding a primary key to the
sp_BlitzIndex is now reporting an index
dbo.ARPayment.Unknown (0). I have refreshed my indexes and there is definitely no sign of any such index.
Here is the message it shows in the output from running
sp_BlitzIndex 'db_name', @Mode=4:
Should this table be a heap? dbo.ARPayment.Unknown (0)