from odoo import models, fields, api class ResPartner(models.Model): _inherit = "res.partner" purchase_delivery_carrier_id = fields.Many2one( comodel_name="delivery.carrier", string="Default Carrier (Inbound)", ) purchase_delivery_carrier_account_id = fields.Many2one( comodel_name="delivery.carrier.account", string="Default Carrier Account (Inbound)", )