This field can only be entered if the Upd indicator is set to Yes.
It is used to enter the code for a specific rule to be applied during the depreciation of an asset, or in the case of a mass process a group of selected assets.
The rule to apply is selected according to the depreciation mode selected and/or the depreciation plan. For example, rules generating fiscal help (Help 25 %, Help 50 %, Energy, Depreciation rise 30 %, ...) can only be applied for the Fiscal plan.