Field help (DEVADJDPM) 

Depreciation method used to carryout the adjustment for the variance for the depreciation totals following a change in method. This field can be entered only when the variance management method has the value "Adjustment for the variance by plan". It is loaded by default, with the LP method (Linear). Note: when the depreciation duration associated with this mode is not entered, the duration is automatically calculated on the basis of the residual duration (Depreciation end date - Start date for the adjustment).