MRN2 & complex rules of devalution

Question

Hi Gurus !
I try to implement the process for devaluation based on movement rate (MRN2). This process will be run yearly during closing.
In this transaction, I want to have a devaluation based on the rate of rotation of stock only base on consumption (or mainly). I explain :
consumption = sum of consumption of item for the fiscal year treated
movement rate = consumption / stock at the end of year
ff the movement rate >= 1 => living stock. no devaluation
     stock at the end of year = 20. consumption of year = 50 ===> rate = 2,5
if the movement rate > 0 and < 1 but on the last three months you have a entry in stock => living stock. nothing to do
if the movement rate > 0 and < 1 but no movements on the last 3 months => "low stock" => devaluation required at 50%
     stock at the end of year = 20. consumption of year = 10 ===> rate = 0,5
if the movement rate = 0 => dead stock. devaluation required at 95%
     stock at the end of year = 20. consumption of year = 0 ===> rate = 0
The devaluation indicator is 0 for a movement in the year, 1 for the first year (dead stock) and up to 1 when the stock is completely die since some years (4 if 4 years without movement)
Weighting factor on movements allow me to integrate the consumption on the last 12 months or entry on the last 3 months.
Weighting factor on stock allow me to keep only the stock at the end of year (when the program is run).
Threshold value on material movement allow me to select or not with a minimum of consumption, if the minimum is not OK, the stock is like a dead stock.
My problem in SAP with customizing:
     I know how to have the living stock (no devaluation) or the dead stock (95% devaluation)
     But how to do for the "low stock" ?
Thanks for your attention on the subject.
Regards
Bruno
Edited by: Bruno FIGUE on Sep 22, 2010 6:05 PM

Answer 1

Our consultant helped me on this one. Instead of trying to force multiple conditions to be met for printing, I used a combination of negative conditions with a suppression conversion.  Here is my final rule:
Rule No. Cond. Table Field Type CO Value1 Conversion
ZC 1 (blank) TAX NBREX N NE '0
ZC 2 (blank) TAX ADEXN N NE '0 00
ZC 3 (blank) TAX PEREX N NE '0 00
ZC 4 (blank) TAX DEPEX N NE '0 00
ZC 5 (blank) TAX ADEXN N EQ '0
This seems to work in all of the test cases I've used.
- April