Identify doesn't work for Trade Cleric Domain

[zerotje]

My character Ajaman Qhatar is a Cleric with the Protection and Trade (Barter) Domains. Trade domain is supposed to grant me Identify (spell level 1). Identify is listed, but refuses to be equiped when dragged to the slot. (Only identify refuses to be equiped).

I'm pretty sure I'm supposed to be able to use Identify. But it won't work.