Types of discount groups.
| Member | Value | Description |
|---|---|---|
| dgboNone | 0 | No discounts |
| dgboItemGroups | 1 | Discounts based on item groups |
| dgboItemProperties | 2 | Discounts based on item properties |
| dgboManufacturer | 3 | Discounts based on manufacturers |
| dgboItems | 4 |