Each sales order item can have multiple deliveries at different date.
Multiple deliveries for each sales item is specify in the Schedule line
of the Sales Order.
When the Sales order was created (VA01) the system automatically
proposes data from the relevant master records:
From the customer master record (VD03) of the sold-to party, the
system proposes sales, shipping, pricing, and billing data. In addition,
the system copies customer-specific master data about texts, partners,
and contact people at the customer site.
For each material in the sales order, the system automatically proposes
data from the relevant material master records (MM03 - Sales view),
such as data for pricing, delivery plant, availability check, tax determination,
and weight and volume determination.
VD53 - Customer-material info record. When you create
the sales order item, the customer material number will be copy into the
item Customer Material. In the Sales order, click Item -> Purchase Order