Coupon code being applied to other products when the eligible product is in the cart

Question

i couldn't find any info on this hence posting it here. Basically I have 30% discount on one single category. We had a case today where the client was able to use that 30% on the whole cart. I did some digging around and the reason was a single product from that category was in the cart.

e.g. 5 items

• item 1: (eligible) £45
• item 2: £35
• item 3: £55
• item 4: £45
• item 5: £35

The total came to £155.49 but it should of been £201.50

My coupon rule is as follow:

If ALL  of these conditions are TRUE :
If an item is FOUND  in the cart with ALL  of these conditions true: 
Category  is  21  

Category 21 is the category which is eligible for the discount.

Thanks in advance.

Answer 1

Looks like you have a Shopping Cart Price Rules. If you want products of a specific category to be 35% off, create a Catalog Price Rule instead.

Just go to menu Promotions > Catalog Price Rule and click in Add New Rule.

Fill all the information, put the condition as you did above and in the tab actions insert the 35% off.

Don't forget to click in Save and Apply, otherwise you will not see the changes in your website.

Answer 2

To avoid this issue simply go to the action part of your coupon and apply the same rule again to the "apply the rule only .." Check picture for more info.