We have Account Numbers and list of partner (Customers and/or Vendors) in journal entry we have some account that have unique partner and other none

We are finding users entering Customers and/or Vendors into Odoo  in account that not have partner - they are not checking properly before adding the information in invoice move line.

How can we build a check into Odoo so that the same Customer and/or Vendor doesn't get created for this account

EX: 401111 -> partner (BNA) -> in move line can add partner (BNA)

      700000-> doesn't have partner ->in move line disable.