Currently there is no easy way to see if there are Stockkeeping Units set up for an Item without navigating from the ribbon. The stockkeeping units can make a number of the Replenishment & Planning parameters on the Item card irrelevant so it makes sense to see immediately if there are SKU's.

Ideally a fast tab should be added to the Item Card that lists the SKUs (it could be hidden if no SKU's exist). This tab could also allow fast entry/editing of SKU's if required.