from odoo import models class PosOrder(models.Model): _inherit = "pos.order" def _prepare_invoice_vals(self): move_vals = super()._prepare_invoice_vals() if "l10n_co_edi_description_code_credit" in self.env["account.move"] and move_vals.get("move_type") == "out_refund" and move_vals.get("reversed_entry_id"): move_vals["l10n_co_edi_description_code_credit"] = move_vals.get("l10n_co_edi_description_code_credit", "1") return move_vals