Field help (DPM6) 

Enter the depreciation mode for the asset or, in the case of a mass process, for all the selected assets. This mode should be authorized for the related company, plan and country.

The choice of the mode is submitted to the following restrictions:

The modification of the amortization mode can lead to the modification of the Depreciation start date of the plan and its loading, according to the setup carried out at the level of the Depreciation method, either with the First use date, or with the Purchase date, or with the Posting date.