Manufacturing Costing

Dear all,

My problem is finished product have Cost Amount (Actual) = 0 after adjusted cost and all component are invoiced.

I found that my clients post output with wrong production order and they correct by posting output with negative qty. But before they correct, this item have been consumed by another Prod. Order.

For example,
Product - Item A --> Component Item A1 (1:1)
Item A1 --> Component Item A2 (1:1) All items are Standard Cost.

Prod. Order No. 001 produce Item A1 Qty 10 (Wrong Prod. Order)
Prod. Order No. 002 produce Item A1 Qty 10
Prod. Order No. 003 produce Item A Qty 10
Prod. Order No. 004 produce Item B1 Qty 10 (Right Prod.Order)


Here is transaction of this situation
No.---> Type - ---> Prod. Order No. ---> Item No. ---> Quantity
1 ---> Consumption ---> 001 ---> A2 ---> -10
2 ---> Output ---> 001 ---> A1 ---> 10
3 ---> Consumption ---> 002 ---> A2 ---> -10
4 ---> Output ---> 002 ---> A1 ---> 10
5 ---> Consumption ---> 003---> A1 ---> -10
6 ---> Output ---> 003 ---> A ---> 10
7 ---> Output ---> 001 ---> ---> A1 ---> -10

After changed status to Finished to all Prod. Order then adjusted cost.
Item A have no actual cost. ](*,)
Have anybody met this problem? :-k

Thank in advance for helps.

Regards,
Rongrit