Clicking a clutter-item (Misc) in the inventory, triggers a warning message at the upper left corner, to inform the player, that he can't equip this Item.
Now I've created a ring as a clutter item and attached a script to it, which evaluates an OnAvtivate() event. The script works fine for me, but I want the warning message to be suppressed.
If its a ring you might have no choice but to make it a wearable object and use OnEquip SKSE might have something for you, but you can't really suppress native engine messages AFAIK