Shown is a Form 4028 with a box superimposed on part of the figure listing the fourteen columns as explained in the text: Serial NumberSC or Alpha Block Control NumberFrom CodeTo CodeReinput Source CodeMaster FileBlock DLN (the following five bullets is a listed subset of this on the line below this header)Service Center or District OfficeTax Class and Doc. CodeJulian DateBlock NumberYear Document CountAdjustment Credit AmountAdjustment Debit AmountDLN Serial NumberControl Record Source CodeNMF Abstract NumberReason for Adjustment