HI Vu,

You can hide/remove a page by calling it by the name:

<xpath expr="//page[name='the_page_name']" position="inside">
    <!-- Your code here to add custom logic -->
</xpath>


<!-- Or to remove the page -->
<xpath expr="//page[name='the_page_name']" position="replace"/>

If your page has no name set your only option is to use xpath expressions with an index (so page[2]). Don't forget that xpath expressions start counting from 0 and not 1:

<xpath expr="//page[2]" position="inside">
    <!-- Your code here to add custom logic -->
</xpath>


<!-- Or to remove the page -->
<xpath expr="//page[2]" position="replace"/>

You can find quite some xpath expressions that look much like what you need in the code. Have a look at https://github.com/odoo/odoo/search?l=XML&q=%3Cxpath+expr%3D%2F%2Fpage for quite some examples.

Regards,
Yenthe

Hello @Vu,

As you know  that on v10 and v11 cannot use string as an identifier string for x-path,

Thanks for the answer @yenthe and it works in common views

But In this conditions, 

we have notebook  inside page and page inside addons have added another notebook and pages in purchase(Product page) view 

- so when we have tried using page[2] and other ways it's always taken the first page inside notebook pages

<record id="purchase_order_form_inherit" model="ir.ui.view">

            <field name="name">purchase.order.form</field>

            <field name="model">purchase.order</field>

            <field name="inherit_id" ref="purchase.purchase_order_form"/>

            <field name="arch" type="xml">

                <xpath expr="//sheet/notebook" position="attributes">

                    <attribute name="name">orderline_notebook</attribute>

                </xpath>

                <xpath expr="//sheet/notebook[@name='orderline_notebook']/page[2]" position="replace"/>

            </field>

    </record>

Regards,

Email: odoo@aktivsoftware.com

Skype: kalpeshmaheshwari