Chapter 15
Promotions & coupons
Create promotions that apply automatically on the sales invoice and the cashier screen: a percentage discount, a fixed amount per unit, a special price, or buy-X-get-Y — with start and end dates, specific days and hours, a minimum quantity or invoice value, limited to a price-list group, or unlocked by a coupon.
Two promotions on one item never stack: the higher priority applies alone, and on a tie the one better for the customer. A price typed by a permitted user overrides every promotion.
Common workflows
- 1
A weekend promotion
"+ Promotion" → percentage discount → the items → the days (Friday and Saturday) → save.
- 2
Buy 2 get 1
Type "buy X get Y" → X = 2 and Y = 1. The free line is a zero-price line that leaves stock at its real quantity, so cost and margin stay honest.
- 3
A coupon
Tick "requires a coupon", type the code and set a usage count. The cashier enters it with F9; the sales screen has a "coupon" field.
Messages you may see — and what to do
- "The promotion equals …% and the maximum allowed is …%"
The "maximum invoice discount" ceiling in settings overrides every promotion — raise it first if the promotion is intended.
- "The coupon is used up"
The promotion has reached its usage limit (counted when the invoice is approved).
- "The free line follows the promotion"
The free quantity is derived from the paid line — change the paid line, not the free one.
- Returns
Returns at the price actually sold (with the promotion), even after the promotion has ended.
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