Why does the game prompt me I need materials when I have them right next to me?

[Yoshida Keiji]

Am I doing something wrong? It`s been a while since I stopped playing (after 1.0 official release). I want to craft a tribalwear for my nudist as he is getting frostbite halfway a trade quest. I only need him to wear something so he can make the journey. I killed a donkey who just joined, yes, lucky me in the dessert in fall. But... What`s the reason?

https://steamcommunity.com/sharedfiles/filedetails/?id=2690870375

[Yoshida Keiji]

Nevermind, I found out I needed 60 units not 30.