make the securing of the load to the pallet difficult or even impossible.
risk the pallet load fouling adjacent cargo or units, with the load becoming wedged or jammed in the stow.
similarly a unit module which is too small for the deck of the pallet will make the securing of the cargo to that pallet less effective, and reduce the ability of ship's bulkhead, container walls, or other cargo to support the pallet loads laterally in the stow.