What does the HALO rule prohibit in inbound stow?

• A. Blocking small items by putting big items in front of them.
• B. Overstuffing a bin.
• C. Placing same or similar ASINs in the same bin or adjacent bins.
• D. Storing items in magenta bins.

Answer: (C)

HALO in inbound stow is about avoiding clustering of the same or similar items in the same storage area. The rule prohibits placing the same or similar ASINs in the same bin or in adjacent bins because having nearby locations hold nearly identical items can lead to picking errors and confusion for warehouse associates. When like items are spread across distinct, non-adjacent bins, it’s easier to accurately identify and scan the correct SKU during outbound processes, which improves accuracy and inventory control.

The other situations describe different storage concerns—such as how items are layered or packed in a bin, overall bin capacity, or using a color-coded bin system—but they don’t capture the intent of separating similar ASINs across bins to maintain clear, unambiguous storage locations.