I'm having issues with discount not applying to all the categories that I have selected, one category is the main and the others are subcategories.
The first image is the categories I need the code to apply to, the second image shows how the discount actually applies on the front end.
It looks as though my code is only applying to the first category I have selected as the products receiving discount are from that category (1607) the £7.99 item that hasn't been discounted in the cart is from one of the subcategories.
I can not find attached images, can you please explain rules again and attached images link so I can help.
If you want create shopping cart rule for multiple categories please check this this link.
https://belvg.com/blog/cart-price-rules-in-magento-2-solution-specialist-certification.html
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