related to va01/va02
1.my requirement is to change quantity of main item as sum of all subitems while creating sales order.
2. when sales party open the va02 it should display only the main item with sum of all sub item quantity.
can u tell me how to implement this .
i got hint for this .using userexit_change_sales_order ,we can do it. but it is not function module , but it is form and also it is in standard include .
i need to know,
1.is it necessary to get access key to change code.
2. how to differentiate va01 and va02 in this coding?
3. that exit is correct or not? and how to confirm it in debugging mode?
any other way if u have please let me know..