One of the ways to have still better (tight) control over
the inventory with still less commitment of resources is by
determining the AX category of items in a given inventory.
Once ABC and XYZ analyses have been done and a list of A and
X classes of items are drawn then AX category is a
combination of the two categories. Going by the definition
of A and X separately , AX category of items , normally,
display a high consumption (A) as well as a high stock value
(X). Essentially, these items are high value , in terms of
overall procurement cost including their being costly.
Obviously , the measures that need to be taken to keep AX
inventory under control is similar to that of A or X items, viz stock less number at any given time, have tight
consumption control, more sources so that supply doesn't
become a constraint when needed etc.