How to inactivate a supplier so that purchase order entry is not allowed

Hello,

Our case is that by mistake we created two different address book records for the same supplier and orders were entered to both of them. Is there a way to make inactive the one address book number so that the users cannot enter orders to it? I know that there is the field Hold Payment in Supplier Master but we have to arrange open vouchers so I think this field is not suitable for our case. We just want to prevent the entry of new entries but allow payments of old vouchers. Is this supported by the system?

Thank you,