Multiple Deliverys in to Single Billing document for same part number
We want to combine multiple delivery items into one invoice line item for same material code,
Scenario is like this,
Sales order getting created with BOM ( Header items and more then 50 Component items with 30 to 40 quantity for each line items )
Based on availability we will create a delivery document for header and component items -fox example
sales order - Header - material - A with 1 quantity and component is Material is B with 40 quantity, based on availability we will create delivery document, let say 20 quantity and rest 20 quantity we will create another delivery docuemnt,
while creating billing system creating with reference to two delivery docuemnt its creating two line items,
My Client requirement is if the material code is same, in billing document they need only one line item with all quantity, let say .. above example is for 40 quantity in to single line items in billing document.
This can be possible in standard SAP,
Can any one guide us or Which billing user exit would be suitable?