Tryton is a high-level general purpose application platform. It is the base of a complete business solution as well as a comprehensive health and hospital information system (GNUHealth).

The `stock_lot_unit` module allows to define a unit and quantity on stock lot.

Lots with unit have the following properties:

- no shipment may contain a summed quantity for a lot greater than the quantity of the lot. - no move related to a lot with a unit may concern a quantity greater than the quantity of the lot.

The *Lot Unit* field is added to the product. This defines the unit to set on new lot.