Backdating issue of va01,vl01n and vf01

Question

my company operates two plant and we just found out that some spares materials were to be sold to the other plant last month which was not sold.....so we want to create a sales order, create delivery and billing......but we want to backdate it base on last month.........how do i go about that

Answer 1

If your MM and FI periods are open, then you can do this. 
Create a sale order and at schedule line level, you can manipulate the date with some previous month's date.
Now while creating delivery, maintain previous months's date in "Actual GI Date" and do PGI.  Finally create an invoice where you can see the date what you maintained in Actual GI Date would be your billing date.
thanks
G. Lakshmipathi