Unit Of Measure (UOM)

They indicate the quantity of product per unit of product purchased

Value	Name	Unit
0	None
1	Square meters	Mq
2	Pieces	Pz
3	Liters	Lt
4	Kilograms	Kg
5	Meters	m
6	Centimeters	cm
7	Cubic meters	m3

The most important parameter is the pieces. Some products can only be purchased in packs of multiple pieces. For example, some chairs.

Unit of measure rate

The rate indicates the value to be multiplied by the quantity to obtain the conversion into the relevant unit.

Ex.

{
    "uom":2,
    "uomrate":4
}

With quantity = 5 you buy 20 pieces of products.

{
    "uom":1,
    "uomrate":1.2
}

With quantity = 5 you have 6Mq of products.