I’m a new by in Odoo and not developer, working in a trading company that purchases and sales are only based on the customer requests.

In Odoo13:

In the quotation step, when the order has not been confirmed yet, Sales unit wants to send a quotation or proforma invoice to customer. My problem is

Before the customer confirm the order, How to update the sales quotation price based on  the vendor’s quotation Automatically ?

Now, the SO (Sales Order) price or Proforma Invoice price is updated only when the purchase is done and the product received into the warehouse then for the next SOs.