Free Shipping for Category only

[snicto]

I want to set FreeShipping for a specific Category only. When I use them both together when setting up a coupon, in the end, FreeShipping is applied regardless of whether the product/products are in the specific category.

Do I require a custom Extension to achieve this, or is there a way to use the existing ones to accomplish this?

Aimeos version: 2022.10.

[aimeos]

Yes, you need a custom implementation of the Category coupon decorator because the behavior of the standard Category coupon decorator is to grant the discount if only one product from that category is in the basket - not if all products in the basket are from that category.