====== Master Data ======

===== Racks =====
Racks are group of Locations organised into a physical rack.
A rack has the following properties:
  * ''Rack index'' is a number that orders the racks into a picking route for order pickers within the warehouse.
  * ''Aisle'' multiple racks are assigned into an aisle.
  * ''Lock'' Locking a rack is a rare practice and has no functional use with the WMS at present.

===== Locations =====
Locations are places within the warehouse where unit loads are stored.  A location has the following properties:
  * ''Capacity'' the maximum number of unit loads that can be stored on this location.
  * ''Max Weight'' the maximum gross weight that can be stored on this location.  We do not account for the additional weight of the storage container or pallet, only the gross weight of the goods.
  * ''Location index'' a location index for ordering and creating a picking route.
  * ''Last stock check'' The last date on which there was a successful (''Accepted'') stock take on this location.

==== Location ordering ====
Location are ordered using the following scheme:
  - Location index
  - Rack index
  - Location name

===== Picking locations =====
Picking locations are a pairing between a ''location'' and a ''stock code''.   The ''max qty'' on a picking location is the the number of stock items that will fill the location.

==== Free picking locations ====
Usually ''picking locations'' maintain a unit load with a count of the exact amount of stock; A free picking location has no unit load and no stock count.  

The stock count in a free picking location is counted by taking the difference between the ''stock on hand'' and the stock on ''unit loads''.

Free picking locations are created by creating a picking location and setting the ''capacity'' of the ''location'' to 0 (zero). A ''Max Qty'' should be set to indicate how much stock can be stored in the location.

**Note** the ''capacity'' is set on the ''location'' it is not the same value as the ''max qty'' on ''picking locations''.