50% accelerate depreciation first year then linear

Question

For Romania I need to implement a 50% accelerate depreciation first year then linear.
I create a new key with Assign Calc methods :
depr type Special tax depr
From the startof depr
method 26 special %
Prd contr  003
Multilevel : I create a new one (50% ..)
(acq year : 9999, year: 1, Per :blanc, BaseVal: 11,Percent: 50% )
Multiple shift : no effect
Scap value : Consid is controlled by cutoff val key
Transaction OABS is ok for special depreciation.
In fact there is a problem with this key !!!
Who can help me ?
Thanks

Answer 1

Than you Dominic,
I adapt my base method 26 ... but when I create an asset record I have this message :
01 Book depreciation
E651 SYST: Depreciation key ZRO1 is incorrect
10 Country book depreciation
E651 SYST: Depreciation key ZRO1 is incorrect
40 Co Area Currency - EUR
E651 SYST: Depreciation key ZRO1 is incorrect
and before when I create the next method 24, I had :
RO01 ZRO1 N 1 : Depreciation key is defined with different dep. type
     Message no. ACRSL034
Diagnosis
     The depreciation type in the depreciation key does not agree with the
     depreciation type in the calculation method. The inconsistent
     depreciation key is RO01 ZRO1 N 1 (chart of depreciation, depreciation
     key, depreciation method, depreciation phase). However, calculation
     method 0024 has depreciation type S.