bemade-addons/bemade_quotation_alternative/models/sale_order.py

from odoo import models


class SaleOrder(models.Model):
    _inherit = "sale.order"

    def action_duplicate_order(self):
        self.ensure_one()
        action = (
            self.env.ref(
                "bemade_quotation_alternative.sale_order_duplication_wizard_action"
            )
            .sudo()
            .read()[0]
        )
        action["context"] = {
            "default_original_order_id": self.id,
        }
        return action