Hi Suresh,
In project profile in CJ01 or CJ02 check the control data tab "Valuated project stock" indicator is set on the relevant project definition, that should get copied in CJ20N.
Check the field PROJ-KZBWS. It should be M for Valuated stock.
Please refer the below link.
How to configure valuated project stock?
Regards,
R.Brahmankar