from odoo import api, models class AccountMove(models.Model): _inherit = 'account.move' @api.model def _get_ubl_cii_builder_from_xml_tree(self, tree): customization_id = tree.find('{*}CustomizationID') if customization_id is not None and 'OIOUBL-2' in customization_id.text: return self.env['account.edi.xml.oioubl_201'] return super()._get_ubl_cii_builder_from_xml_tree(tree)