SRM: many confirmation for PO

Question

In SRM, I'd like to insert a confirmation for a "una tantum services" purchase order.
Unluckly, SRM allows me to insert many confirmations, exceeding total quantity, even if all PO's quantities are approved.
For example:
Purch.order quantity : 3 pieces
First confirmation:3 pieces (confirmation not approved)
Second confirmation: 2 pieces (inserted later and in not approved)
The second one is saved on system, but if the first is approved before, when the approver gives the ok the second, the confirmation goes in transfer error (quantity too high - tolerance limit ).
I know this is a process error. Also, we know there's a flag on PO's position that finalizes confirmation (last confirmation check box)
But, does anyone know how prevent situation without activation of check-box flag? Are there any OSS note solving the problem?

Answer 1

Jagdish,thank you for your help.
I know SRM doesn't allow you to confirm more qty than the ordered qty.
My problem is that if i confirm a parzial quantity and the GR goes in approval status, i can insert GR for quantity exceeding the total quantity of order.
the second GR goes in transmission error after its approvation.
ex. PO quantity 5
first GR quantity 4
second GR quantity 3 (4+3 > 5!!!!)
After first approvation, nothing happens until the second GR will be approved. The GR goes in trasmission error for quantity exceeded.
Regards,
Christian