from odoo import fields, models class ResConfigSettings(models.TransientModel): _inherit = "res.config.settings" pos_is_spanish = fields.Boolean( string="Consider the specific spanish legislation, such as the use of simplified invoices", related="pos_config_id.is_spanish", ) pos_l10n_es_simplified_invoice_limit = fields.Float( related="pos_config_id.l10n_es_simplified_invoice_limit", readonly=False, ) pos_l10n_es_simplified_invoice_journal_id = fields.Many2one( related="pos_config_id.l10n_es_simplified_invoice_journal_id", readonly=False )