Example: 

1.  Batch_number: B0001
​-> ​Product-xyz  100kg sent to manufacturing then finished goods sent to the warehouse.
2. Batch_number: B0002
​-> Product-xyz  200kg sent to manufacturing then finished goods sent to the warehouse.
3. Batch_number: B0003
​-> Product-xyz  500kg sent to manufacturing then finished goods sent to the warehouse.

When I sell 750kg of the Product-xyz I have to deliver the product from different batches and in an invoice I have to show the batch numbers beside the product list.