Dear thaeshji,
Check your valuation class of the material and OBYC setting of BSX,GBB,WRX settings for that material.
If it is RM
Ex. 1. You are using 3600 valution class in material
2. In OBYC t code select BSX and give the chat of accounts
3. Valution modifier - 3600(valution class)- GL Account
4. Same for WRX (3).
while doing MIGO
Inventory RM BSX XXXX
gr/ir clearing A/c WRX XXXX
If it is FG
Ex. 1. You are using 7200 valution class in material
2. In OBYC t code select GBB and give the chat of accounts
3. AUF(in case of production) - 7200(valution class)- GL Account
4. Same for BSX- 7200valution class - GL account.
while doing MB31, or MIGO
Inventory FG BSX XXXX
INC/DECin stocks FG GBB-AUF XXXX
Regards,
Venkat