Unit of measure

In business documents that are created from JSON metadata, the unit of measure (unitOfMeasure) in the document needs to be specified according to the standards UN/ECE Recommendation 20 and UN/ECE Recommendation 21.

The unitOfMeasure property in the metadata consists of two fields, unit and code.

The unit property can be used on its own with one of the following values:

One
Piece
Package
Kilogram
Metre
Litre
SquareMetre
CubicMetre
Kilometre
Tonne
KiloWattHour
Hour
Day
Month
Year
Rec20
Rec21

The values Rec20 and Rec21 refer to UN/ECE standardized code lists. To expand the list of supported values, set the unit property to Rec20 or Rec21 and the code property to one of the allowed codes. Some examples are provided in the following tables:

**Recommendation 20 codes**
Rec20 code	Name
C62	One
H87	Piece
KGM	Kilogram
MTR	Metre
LTR	Litre
MTK	Square metre
MTQ	Cubic metre
KMT	Kilometre
TNE	Tonne
KWH	Kilowatt hour
DAY	Day
HUR	Hour
MIN	Minute

**Recommendation 21 codes**
Rec21 code	Name
BG	Bag
BA	Barrel
BX	Box
CT	Carton
CY	Cylinder
PK	Package
PX	Pallet
RL	Reel
SA	Sack
ST	Sheet

For a full list of unit of measure codes, see UN/ECE Recommendation 20 and UN/ECE Recommendation 21.