A method of determining pallet layers for placement by a material handling
system robot can include identifying cases for inclusion in a pallet and
identifying case dimension information for the cases. Using the case
dimension information, the cases can be classified into at least one
group, wherein each group is defined by a height range such that cases
classified within a group have a height within the height range
associated with that group. Cases of one of the groups can be assigned to
locations within a pallet layer, wherein the pallet layer has an area
within a predefined area range.