Hi,
01. After Release and Saving the Order
02. Make GI in MB1A ( here You will Issue faulty FG material to your production order as you maintained positive qty in Order BOM).
03. Then Confirm in CO11N
04. Make GR in MB31 (as a result stock of your Component Material will increase in respective storage location, since you maintained it in negative qty in Production Order BOM) - ByProducts
Thanks With Regards,
Dinesh Kumar V.