Costing Run for all Hub Plants

I just want to understand from you regarding your Monthly Costing Run for all Plants.Actually we have Plant 5000 (Ruwais) which is our Manufacturing Plant having BOM.

We have two other Plants 7000 ( Shanghai ) and 7100 ( Singapore ) these are our Hub Plants not Manufacturing Plants and having no BOMs.

When we run our Monthly Costing Run for Plant 5000 using TCode (CK40N), it’s completes smoothly without any error.

We have to create a material cost estimate in monthly basis using TCode (KKPAN) before we execute cost estimate for both Plants 7000 & 7100.

We see these runs at the months end as very time consuming and we are not manage on time set for such update in SAP as part of the month end procedure.