Use Case: manual_redistribution_between_warehouses

Initialisation

(Words in italic refer to words from the Noun List)

1. The Foreman gives a command for redistribution between warehouses.
2. A window is presented to the Foreman.
3. The items can be ordered in a number of ways. This is selected with the ORDER menu.
   The following orders are possible:
   - alphabetical order
   - index order (each item has a unique number)
   - turnover of items
   - storing order.
4. In the "From place" table, we might choose to view either all places in the current warehouse
   or, if we have selected an item, the places where that item exists.
5. In the "To warehouse" table, we might select all warehouses or the warehouses that we
   have a transport to this week.
6. The "Issuer" and "Warehouse" fields are automatically filled when the window pops up,
   but they may be changed. (This is the way to do a redistribution from another warehouse to
   our own warehouse.)
7. The Foreman selects an item by pointing to it and dragging it to the redistribution form.
   The Foreman then selects from which place to take the items and to which warehouse to
   transport them. This information is shown automatically in the form.
8. The Foreman then gives the quantity to be moved (a possibility is to choose "ALL")
   and a date by which it must be done.
9. It is possible to change the information when the form has been edited. When the
   Foreman EXECUTES the redistribution, the transport is planned. It is also possible
   to CANCEL the redistribution. Selecting HELP shows a window of information
   about the current window.
   

Planning

1. When the redistribution is executed, the items to be moved are marked as "move pending".
2. The planning should minimise the use of trucks, on condition that all delivery dates
   should be kept, and the trucks should be compatible with any delivery requirements
   for the items (for example, in size, weight or temperature). This should be done by
   adjusting existing, already planned redistributions to take account of the new
   redistribution requirements.
3. This may create new transport requests and may also change existing transport
   requests already in the system.
4. The transport requests are connected to a specific trucks transportation plan.

Loading

1. A Truck Driver asks for a transportation request. The request is marked as ongoing.
   The Truck Driver also gives the expected time of truck arrival at the warehouse.
2. The system gives a relevant request to the Forklift Operators to have the items ready
   when and where the truck is expected.
3. When a Warehouse Worker gets a request to fetch items, at the appropriate time,
   the Warehouse Worker orders Forklift Operators to move the items to the loading platform.
4. When the Truck Driver arrives, the items are loaded. The Truck Driver tells the system when the truck is loaded and when it is expected to be at the new warehouse.
5. The system decreases the number of items in this warehouse and marks the transport
   request as "On Transport".

Unloading

1. When the truck has arrived at the new warehouse, the items are unloaded.
2. The Truck Driver tells the system that the transport to this warehouse has been done.
3. The Warehouse Workers receive the items and determine a place for them in the
   warehouse.
4. Forklift Operators are told to move the items to the new place in the new warehouse.
5. When the Truck Driver confirms the insertion, the system updates the new place
   for the items.
6. The transportation is recorded and stored in the system.
7. The redistribution and the transport request are marked as "Performed". (They are
   deleted by a Foreman or the System Manager later.)

Exception Cases

1. A request is not executable: the execution is interrupted and the Foreman issuing
   the request is informed.
2. Redistribution is wrong: when the redistribution is filled in and executed by the
   Foreman, the appropriateness is checked immediately and errors are returned to
   the Foreman. Possible errors may be
   (a) The warehouse place does not have enough items to move.
   (b) The destination warehouse is not appropriate to the item (for example because
   of size, weight or temperature problems)
3. No truck available: when performing the planning, there may not be any trucks available
   at an appropriate time. Then notify the Foreman who should either delete the request
   or change it.