The location hierarchy & codes

Warehouse Layout models a warehouse as a five-level tree. Understanding the levels — and how codes are built — makes the whole screen predictable.

The five levels

Level	Letter	Holds	Example
Zone	Z	Aisles	Ambient Storage, Cold Chain · 2–8°C
Aisle	A	Racks	Aisle A
Rack	R	Shelves	Rack 01
Shelf	S	Bins	Shelf 1
Bin	B	Inventory	Bin 01

A location can only hold children of the next level down: a zone takes aisles, an aisle takes racks, and so on. A bin is the leaf — it’s where inventory actually sits. That’s why the “add child” action on each row is labelled with the single next type (a zone shows + Aisle, a rack shows + Shelf), and a bin shows no add action.

How codes are built

Each location’s code is its parent’s code plus a one-letter type prefix and a two-digit number:

Z01                     ← first zone
Z01-A01                 ← first aisle in Z01
Z01-A01-R01             ← first rack in that aisle
Z01-A01-R01-S01         ← first shelf in that rack
Z01-A01-R01-S01-B01     ← first bin on that shelf

When you add a child, the code is auto-generated from the parent and the next available number — you can’t mistype it. The number counts existing siblings of the same type, so the second aisle under Z01 becomes Z01-A02.

Chips and the summary rail

Every row shows a coloured type chip with the level’s letter (Z / A / R / S / B), darkest at the top of the tree and lightest at the bin. The summary rail at the top counts each level across the whole warehouse, so you can see the shape — “4 zones, 4 aisles, 4 racks, 2 shelves, 2 bins” — without expanding anything.

Status

Each location is Active or Inactive. Inactive locations stay in the tree (and keep their code) but signal that they shouldn’t be used for new put-away — useful for a quarantine zone or a rack being re-built.

Related

• Location types & codes · Add child locations