S/C = Skid / Carton, the barcode I scan when starting a new Master Carton Data = S-001/C-01. For Skid 001 and Carton 01. I know that 63 Master Cartons fit on 1 Skid so, I pre-printed them all. The 2nd Master Carton label is S-001/C02... The 1st carton of the 2nd Skid is S-002/C01.
G1, UPC...