POD Invoicing date

Hello,

We are in the process of implementing POD process and I was concerned with the dates issue.

Goods dispatched from the factory - 1st Nov

Goods reached at customer's depot - 3rd Nov

POD Confirmation by customer - 3rd Nov

Billing done after POD Confirmation on 3rd Nov.

The billing date should be 3rd of Nov but standard SAP picks up 1st Nov as the billing date. Does anyone know how to modify this?

Thanks

Keyur