Creating or modifying the UOM code Use the Unit of Measure page to create or modify the Unit Of Measure (UOM) code. Select Setup > Master Data > Unit of Measure. Click Add. The Define Unit Of Measure page is displayed. Note: You can use the Edit option corresponding to the UOM Code to modify the UOM code. Specify or modify this information: UOM Code The code of the UOM. Description The description of the UOM. Click Save.