Fixes ISSUE-55472: Price Adjustment multiple can be set to 0
Description
In the Discounts and Promotions window, discounts with Price Adjustment rule have a flag named IsMultiple. This flag applies the discount ‘in packs’, and requires to define a quantity for this pack. This quantity can be set to 0 and the minimum possible value should be 1, so a new constraint is required.
Testing Performed
Edited by Jon Galarza