Disenchant Item Not a Valid Target in War Within

I’m able to disenchant items with the exception of a few. I get the message “item not a valid target.” One is Felsoul Cowl. It and the others are green that aren’t soul bound. Is this a bug or some type of limitation? My enchanting level is 80.

Its mostly vendor items that I am unable to DE usually, like the undercoins gear or the renown items from S1? Otherwise you would have an infinite amount of mats situation. Felsoul cowl feels like a boosted lock item, it would fall in that category also.

I’ve found it to be very irregular with TWW items. I think I’ve seen three green BoE items that could not be disenchanted at first attempt.

Two of them were able to be disenchanted when I sent them to a different character with Enchanting.

The third I ended up vendoring.