Possible values

The promotion discount amount for each promotion is calculated individually using the order line amount or the total order amount. Promotion discounts from all promotions are added together. After the promotion discount amounts are calculated, this number is subtracted from the order line amount or the order amount.

The promotion discount amount from a promotion is calculated using the order line amount or the total order amount and is immediately subtracted from the line amount or the order amount. The resulting line amount or order amount is used to calculate the discount for the next promotion for that order line or order. The order line amount or the order amount is reduced by the application of each promotion.