This field is used to characterize the unit : Length, Area, Volume, Mass/Weight, Packing, Time, Numbering, Others...
According to the software in the Adonix technology used, there can be a control on the unit type. For example, in Adonix X3, only the units of the type Packing can be used as units in the stock entry, in addition to the normal stock units for the product (which is not subject to any limit).