Hi HeGo,

Please deploy the following code inside a custom xml file,

        name="name">res.partner.pivot
        name="model">res.partner
        name="arch" type="xml">
            string="Partner Pivot" sample="1">
                name="date" type="row"/>
                name="credit_limit" type="measure"/>
                name="country_id"/>
                // add the fields that you want show in pivot view
            
        
    
id="base.action_partner_form" model="ir.actions.act_window">
        name="view_mode">kanban,tree,form,activity,pivot
    
id="res_partner_action_contacts_view_pivot" model="ir.actions.act_window.view">
    name="sequence" eval="3"/>
    name="view_mode">pivot
    name="view_id" ref="res_partner_view_pivot"/>
    name="act_window_id" ref="contacts.action_contacts"/>