# -*- coding: utf-8 -*- from odoo import models, fields from odoo.addons.sale.models.sale_order import LOCKED_FIELD_STATES class SaleOrder(models.Model): _inherit = "sale.order" report_note = fields.Html("Note", states=LOCKED_FIELD_STATES,) def _prepare_invoice(self): res = super(SaleOrder, self)._prepare_invoice() res["report_note"] = self.report_note return res