The Drop Shipment Invoicing functionality gives the User the ability to control how the invoicing process works where Items are set as Drop Shipment on Sales and Purchase lines. As standard, Business Central requires the Sales Order to be invoiced before the Purchase Order.
This new functionality provides two additional options which allow them to invoice the Purchase Order first, either automatically (thus breaking the link between the Purchase Order and Sales Order requiring them to be invoiced separately) or with a prompt message that the User must click to confirm they want to do this. A Default option will continue to process drop shipments using standard functionality so please refer to the Setup to see how to change this.