Not long ago I was looking for legal guidance.
I ended up on https://gram-news.com.ua/naslidky-neyavky-v-sud-st-268-kupap-shho-potribno-znaty-shhob-unyknuty-problem/.
It was hard to find accurate info. Most sources were confusing.
The Article 268 explanation clarified everything.
On this site I found practical tips.
Very informative if you need info on Ukrainian law.