Creating the nature for a portfolio item
Natures are required to create the models that you use to create the portfolio items. Because the nature governs the management constraints of the portfolio items, you must create as many natures as you require for a given type of portfolio item.
Example: If you manage software as assets, batches and untracked assets, you must create three corresponding natures: Software, Software (batch), Software (untracked batch).
It is recommended to create as many natures as there are models of portfolio items.