Hi!, in the model res.partner I have two contacts with the same account number, one is a Company and another is its Sucursal but in the table res.partner.bank the field acc_number is UNIQUE. The context of the link  between res.partner and res.partner.bank is the following:

context="{'search_default_partner_id': active_id, 'default_partner_id': active_id}"

I need that it search first for active_id and if record no found, do it for parent_id, something like that.
Iam working with Odoo 11.0
I would appreciate any suggestions or comments