odoo16/addons/mrp/wizard/mrp_production_backorder.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>
        
        <!-- MO Backorder -->
        <record id="view_mrp_production_backorder_form" model="ir.ui.view">
            <field name="name">Create Backorder</field>
            <field name="model">mrp.production.backorder</field>
            <field name="arch" type="xml">
                <form string="Create a Backorder">
                    <group>
                        <p colspan="2">
                            Create a backorder if you expect to process the remaining products later. Do not create a backorder if you will not process the remaining products.
                        </p>
                    </group>
                    <field name="show_backorder_lines" invisible="1"/>
                    <field name="mrp_production_backorder_line_ids" nolabel="1" attrs="{'invisible': [('show_backorder_lines', '=', False)]}">
                        <tree create="0" delete="0" editable="top">
                            <field name="mrp_production_id" force_save="1"/>
                            <field name="to_backorder" widget="boolean_toggle"/>
                        </tree>
                    </field>
                    <footer>
                        <button name="action_backorder" string="Create backorder" data-hotkey="q"
                            colspan="1" type="object" class="btn-primary" attrs="{'invisible': [('show_backorder_lines', '!=', False)]}"/>
                        <button name="action_backorder" string="Validate" data-hotkey="q"
                            colspan="1" type="object" class="btn-primary" attrs="{'invisible': [('show_backorder_lines', '=', False)]}"/>
                        <button name="action_close_mo" type="object" string="No Backorder" attrs="{'invisible': [('show_backorder_lines', '!=', False)]}" data-hotkey="x"/>
                        <button string="Discard" class="btn-secondary" special="cancel" data-hotkey="z" />
                    </footer>
                </form>
            </field>
        </record>

        <record id="action_mrp_production_backorder" model="ir.actions.act_window">
            <field name="name">You produced less than initial demand</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">mrp.production.backorder</field>
            <field name="view_mode">form</field>
            <field name="target">new</field>
        </record>
       
    </data>
</odoo>