from odoo import fields, models class ResConfigSettings(models.TransientModel): _inherit = 'res.config.settings' pos_ojol_discount_product_id = fields.Many2one( 'product.product', related='pos_config_id.ojol_discount_product_id', string='Ojol Discount Product', readonly=False, help='Product used to create the Ojol discount line in POS orders.', )