Hi ,
I think you have to manually enter the Furnace No in the each process order having input X1 and X2 .
If the order has component X1 , then enter the Furnace No F1 in Process Order Good Recipient /unloading point field in header so that you can identify the at least in the Production report to trace the same product from different furnace .
We have the similar scenario where similar product comes out of using various material .We have a Process Order Update program using BDC call of COR2 to update information like funnel number , throughout system number , Remarks etc in those field for may order collectively and later on those tracking information comes in COOISPI or any production report for tractability management .
Regards
JH