Retroactive Billing allows you to change billing amounts retroactively in the event of a price renegotiation with the Customers.
Retroactive Billing is a common business process in some industries, especially the automotive industry, whereby a customer requests changes to the amounts charged on already invoiced orders and receives credits or additional invoices.
For giving credits to the customer, one would need to create a credit memo or if customer requests for additional invoices, then one would need to create Retro Billed Sales Order.
Below is the process to generate retro billed sales order
1) Generate Price Change Advices
2) Approve the Price Change advices
3) Generate Retrobilled Sales Order
4) Follow the standard invoicing procedure to invoice the retrobilled sales order for the price difference.