If you have undercharged a product on your John Lewis invoice, please contact your Buyer.
When doing this, please provide an undercharge invoice for the total value underpaid and a breakdown detailing the products and invoice numbers affected.
The Buyer will then make any necessary changes to the pricing system if required.
If the Buyer is in agreement with your undercharge, they will let you know and send the undercharge invoice and breakdown information, and their authorisation for correction and dissection number for processing, to the Finance Service Centre.