account_period_close_view.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    
    <record id="view_account_period_close" model="ir.ui.view">
        <field name="name">account.period.close.form</field>
        <field name="model">account.period.close</field>
        <field name="arch" type="xml">
            <form string="Period closure">
                
                <label for="validated" string="Please confirm the period closure." />
                <group>
                    <field name="validated" />
                </group>
                
                <footer>
                    <button string="Close the period" name="close" type="object" class="oe_highlight"/>
                    or
                    <button string="Cancel" class="oe_link" special="cancel"/>
                </footer>
            </form>
        </field>
    </record>

    <record id="action_account_period_close" model="ir.actions.act_window">
        <field name="binding_model_id" ref="account_period.model_account_period" />
        <field name="name">Close a period</field>
        <field name="res_model">account.period.close</field>
        <field name="view_type">form</field>
        <field name="view_mode">form</field>
        <field name="view_id" ref="view_account_period_close"/>
        <field name="target">new</field>
    </record>

</odoo>