FA posting type confusion

Dear All,

Could anyone of you clarify what “custom 1” and “custom2” FA posting types mean . And at what cases we select that?

This allows the definition of depreciation that is not covered by straight line and declining balance etc. Against your asset have a look at the columns you can bring forward, you have some specific to the custom 1, so you can define the actual % you want to depreciate the item by this year etc.