confirm requirement is more than recipts
I am currently facing an issue in back order processing.
1.I have created a planned order of 110 quantity in location A on the date 16.10.2008.
2.Then created a sales order of 100 on 25th of same month which consumes 100 out of the planned order.
here in product view i can see the following--
Rec/Req quantity is 100- , conf quantity is 100- and available is 10
3. i again created another sales order of 100 on 21st (between planned order and 1st sales order). Now on 21st i can see Rec/Req quantity is 100- , conf quantity is 100- and available is 10 and on 25th ,Rec/Req quantity is 100 , conf quantity is 100 and available is 90-.
3. when i go to ATP tab in product view, it shows recipts element as 110 requirment as 200 and confirm requirement as 200. which is more than recipts.
4. moreover when i run interactive back order processing, it confirms both quantity of 100 each on their respective sales order date.
Does any one have any idea why system is showing such an abnormal behavior??
Thanks in advance,