Delivery qty not correct for partial delivery

Question

Hi, I met some issues need your help!
1) Create a sales order base on the sales bom.
2) Current stock and supply is not available for the required delivery date.
3) According to the current stock or supply qty.only confirm partial qty for the components.
    eg.
    the structure of this sales bom as below:
    Material: A 1PC --> B  1PC
    Material: A 1PC --> C  1PC
    After ATP check ,the result as below.  
    item 10   mateiral A (Header)          100PC   ( not relevent for inventory)
    item 20   mateiral B(component)     100PC   confirmed  30PC
    item 30   material C(component)     100PC.  confirmed  10PC
4) Create delivery(partial delivery) with the selection date.
5) We can find the component quantity is correct but the header quantity is incorrect.

Answer 1

Hi
Configure the field 'Create Delivery Group' in the item category of BOM (VOV7) in the Bill of Material/Configuration area. Please go thro the F1 help details of that field..
Form delivery group and correlate BOM components
Here you can determine whether sub-items that belong to a main item, and which resulted from a BOM explosion, are to be combined in a delivery group.
Use
You use a delivery group to determine a common delivery date for all the items that it contains. If you double the quantity ordered for the main item, then the order quantity for the sub-item will also be doubled.
Indicator X means that a delivery date is created for the delivery group. The system uses the last date (chronologically) of an item in this group to create the schedule line date.
Indicator A means that the system generates correlated schedule lines. If no complete delivery is required, as soon as all the items in a bill of material are available, the system creates a correlated schedule line. On the first date, when all items in a bill of material are available, a confirmed quantity is issued.
Thanks,
Ravi