Problem: How can a Discount be added to a Customer Order/Invoice?
Solution:
- Go to Discount Types
- Create a new discount type, press save, and close
3. In the Customer Order Main tab, select the needful discount type
4. Refill prices option enabling will be demanded if you want to apply a discount to an already posted Customer Order, but please mind that if you enable the Refill Prices option you’ll need to enter Prices again.
For automatic discounts setup please refer to the link: 3.3.2. Automatic Discounts and Markups, 3.3.3. Automatic Discount Conditions