from odoo import models class AccountMove(models.Model): _inherit = 'account.move' def _prepare_product_base_line_for_taxes_computation(self, product_line): # EXTENDS 'account' base_line = super()._prepare_product_base_line_for_taxes_computation(product_line) pos_config = self.pos_order_ids.config_id base_line['l10n_it_epson_printer'] = self.country_code == 'IT' and pos_config.it_fiscal_printer_ip return base_line