Shelf life

The shelf life of an end item indicates the number of days, weeks, months and/or years between its production and its best before date. Put the other way around, an order's best before date = its due date + its shelf life + its extra shelf life, where extra shelf life <= maximum extra shelf life. You define shelf life and maximum extra shelf life in the End Item Entry window, and extra shelf life when creating an order. Because a best before date is a function of production date and the various shelf life variants, you cannot define it independently.