from odoo import models, fields class ProductProduct(models.Model): _inherit = "product.product" variant_description_sale = fields.Text( "Variant sales description", translate=True, help="This note is added to sales orders and invoices for this particular variant.", ) def get_product_multiline_description_sale(self): name = super().get_product_multiline_description_sale() if self.variant_description_sale: name += "\n" + self.variant_description_sale return name