increment:
Int! -
The value that specifies the quantity increment between minimum and maximum of the rule.
Only quantities divisible by this value will be considered valid.
The increment must be lower than or equal to the minimum and the maximum, and both minimum and maximum
must be divisible by this value.
maximum:
Int -
An optional value that defines the highest allowed quantity purchased by the customer.
If defined, maximum must be lower than or equal to the minimum and must be a multiple of the increment.
minimum:
Int! -
The value that defines the lowest allowed quantity purchased by the customer.
The minimum must be a multiple of the quantity rule's increment.