If users want to adjust lot quantity without affecting IC quantity, use Serial/Lot Reconcilations icon in I/C Periodic Processsing folder to make the adjustment. Select "Shipment" as the Transaction Type for decreasinig the lot quantity only or select "Receipt" as the Transaction Type for increasing the lot quantity only for the approriate Item Number and Lot.
If users want to make adjustment to affect both IC quantity and lot quantity, users should use I/C adjustment instead.