Omen of Sovereign is not working for my Body Armour

Hi,

I am trying to add Ulaman Suffix Modifier to my Body Armour but I am getting an error like "Omen is incompetible...".

I checked everyting;

- I am using preserved Rib
- Have an open suffix on my body armour (int)
- My body armour item level is 81

Am I missing something about how the abyss craft is working, or is this a bug?

The omens say (at least now) that they only work on weapons and jewellery.
the other requirement is minimum ilvl 65.