Using ODOO 16

I have several parts that are now obsolete.  How do i configure the Inventory, Purchasing and Web modules so that when a customer searches for obsolete Part# ABC, they get the new updated Part# XYZ.

So the Purchasing Department orders Part# XYZ, on the Web they see Part #XYZ and the Inventory team is smart enough to use up all the Part# ABC before using Part# XYZ