Based on the selected depreciation method, this field can be initialized according to the specified duration. Thus, in the case of a Non depreciated or depreciated asset based on the following methods: Ascending/Descending/Manual, you do not have to enter this field.
On the other hand, for theDeclining method, the suggested value can be modified, which is not the case when the Straight-line method has been chosen.
For the Straight-line depreciation, this rate is applied every year to the total amount, for the Declining depreciation, the rate is applied to the net value.