Unit of Measure ID, Numeric value only, 0 through 9, where 0 always represents
a single unit. 1 to 8 are used to indicate different packaging levels above the unit of use.
The value 9 is used for variable quantity containers when manual key entry or scan of
a secondary will be used to collect specific quantity data.
The labeler should ensure consistency in this field within their packaging process.
HIBC