Logic of determining value for Inventory offsetting line item

Question

Hi,
I want to know the following for the reversal of Process Order for materials for which the price control is 'S'.
How the value for GBB (Inventory offsetting) is determined. I have observed it taking the weighted rate of the (Summation of the Total Actual Cost / Sumation of Actual Qunatity) * Reversal Quantity. The BSX line item is determined by Standard Price * Reversal Quantity
The balance is posted in the Price difference.
I want to know why this difference is determining tge line items.
I have gone thru SAP Note 216080 in this regard but failed to understandard the basic resaon why this is happening.
Regards
Partha

Answer 1

Dear colleague,
you are right
>note 422606:
a) The manufactured material has price control 'S' (Standard price).
   Valuation is carried out for goods receipts using the standard
   price that is currently valid.
   For the reversal of goods receipts, the valuation of the debit of
   the order (offsetting entry to stock posting) is carried out
   using the price determined from the quotient of value of goods
   received and quantity of goods received. That is, all previous
   goods receipts are used for the valuation of the reversal of a
   goods receipt, but order settlements are not used.
It is the standard system behaviour that the reversal of goods receipt
for production order are not valuated with standard price. All previous
goods receipts are used for the valuation of the reversal of a
goods receipt.
Goods receipts are always reversed with an average of the prices of
all goods receipts in the order history. Therefore price differences
may occur. This behaviour is as well explained in the attached
note 49995 in the reasons and prerequisites step. As well you find
an explanation in note's 422606 symptoms. the system tries to avoid the reversal
with posted values no longer possible.
If this replies your question ,please mark it as answered,
best regards,
maria