General and item dependent conversion factors

General conversion factors define the ratio between units of the same physical quantity type. For example, the conversion factor from one kilogram to one gram is 1000, independent of the item to which the unit belongs.

You can limit the number of conversion factors by defining the ratios between units of the same physical type as general conversion factors.

Item dependent conversion factors are only valid for specific items or item groups. Use item dependent conversion factors to define the ratio between units of different physical quantity types for a specific item.