The company have a special business process is: Customers ordering a product, a Sale Order was created, Booked and waiting for pick release. But sometimes ,the customer want receive the invoices before the delivery.to y make a Manual Invoice and reference the Invoice to that Sale Order for tracking progress shipping later. Because the invoice was Manual then may be variance between the invoice and total shipped goods.
we can map to custom report (like Delivery Challan/Order) having similar looks like Invoice which
will be called thru a reques tset, at the time of pick release. However,
based on actual delivery invoice was generated and said custom report
number was shown as a reference. Legal implications of local tax authorities
also need to ensure.