Hi All,
We are implementing PS,MM,SD,FI &CO for a companay which works essentially on engineer to order scenario and using vlauated projec stock & actvity account assigned networks
Inhouse production is through typical assembly processing process - Where input & output materials are transferred through BOM PS Transfer from WBS BOM.
Input materials are issued to activity; work performed by work centers are entered by confirmation; at completion of work out put materials is 'Received from activity'. Both material issue and receipt are done wrt reservation.
When this is done, as per standard process, the cost addition (and hence value addition) is to activity and thereby to WBS element. The output material is not valuated. All the cost(or values) become project value which will reflect in WIP calculation. WIP is calculated as month end process.
At month end if the company wants to know the current asset from project and relevant stocks:
= WIP of project + Inventory value of the mmaterials.
Pl. note that only input materials i.e. raw materials and Bought out materials will have inventory value; the output material will not have any value.
The process is alright and I think we are alos complying to Accounting stanadard for project system - directive from Institute of Chartered accounts - India.
This process was first aceeptable to customer; but now they say - the out put materials should be valuated. So that, when inventory value is taken - it is RM+BO and valuated semifinished +valuaed finished materials
One big reason they say is that they have to show inventory value to the Banks.
Now I need clarification in following points
1. How to valuate the out put material when working only with project system. (apart from using user exit )
2. If this is done, the project cost/WIP calculations will show ups amd downs - as goods receipt with valuated value will be with 
sign - this will reduced the cost. This will cause variuos problems - almost no standard SAP PS cost report will reflect the reality - WIP can not go up and down...This is illogical.
3. Have you faced similar situation in implementation - that - Banks can not be conviced about this PSway of WIP calculation? Taking into consideration that project implementation is in India - an experienced reply can be very helpful
Thanks and regards
A.Saravanan