I was trying to create a pivot in Odoo v11 but when I install the app , It shows this error

ValueError: Wrong value for ir.actions.act_window.view_type: 'pivot'

my xml code is as follows:

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

 <field name="name">projection.onetomanydata.pivot</field>

 <field name="model">projection.onetomanydata</field>

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

     <pivot string="View Achievements">

        <field name="date" type="row"/>

        <field name="inv" type="row"/>

        <field name="target" type="measure"/>

        <field name="sales_today" type="row"/>

        <field name="inv" type="col"/>

        <field name="date" type="col"/>

     </pivot>

 </field>

</record>