IID, I don't remember. OCI is Overpack Inquiry. Tells you wants attached to that overpack label and what should be inside. WLI is Warehouse Location Inquiry you can use it on any location in the warehouse and tell you what's systematically there. FCI is Full Case Inquiry, same as OCI it tells you what's attached to the label (conveyable/noncon/etc).
Been around since we switched to nextgen a decade ago. Nothing new.