Interface CartDiscountValueRelative

Indicates how the discount applies when using CartDiscountPatternTarget.

- If the mode is `IndividualApplication`, the discounted percentage is applied on each unit's price. The units matching the `triggerPattern` are not considered.
- If the mode is `ProportionateDistribution` and `EvenDistribution` the discounted value is calculated from the total value of the units matching the `targetPattern` and distributed among the units matching the `targetPattern` or `triggerPattern`. These modes are allowed only if [CartDiscountPatternTarget](ctp:api:type:CartDiscountPatternTarget) `triggerPattern` is non-empty.

Fraction (per ten thousand) the price is reduced by. For example, 1000 will result in a 10% price reduction.