The defect that escapes most case packing and palletizing lines is not a dropped case or a missed pick—it is a case that reaches the pallet in the wrong orientation. A single rotated case in a layer creates an unstable column, and the pallet that looked square at the top of the layer collapses in transit. This line verifies case orientation at the layer-build station, not at the pick point. After the pattern is formed but before the layer descends onto the pallet, a