Trade order confusion

[Bocephus]

I got a trade order with

I bought poisons from the alchemist, it rejected them, I assumed it was because of lesser.
So, I pulled out my alchemist and made 15 poison potions.
These too were rejected.
What is it asking for?

 

[Dan]

Possibly Poison scroll?

 

[Bocephus]

That's it!
Upon reading your answer I had a face palm moment.
thank you