I want to change the string name of vat,phone,mobile in res.partner and palnned_revenue(Expected Revenue) field in kanban view(CRM)

i tried with

 <record id="pannumber_contact_fields" model="ir.ui.view">
         <field name="name">customer details</field>
    <field name="model">res.partner</field>
    <field name="inherit_id" ref="base.view_partner_form" />
    <field name="arch" type="xml">
 1.    <xpath expr="//field[@name='vat']" position="attributes">    
              <attribute name="string">PAN NO</attribute>
        </xpath>
        <xpath expr="//field[@name='phone']" position="attributes">
                <attribute name="string">phone1</attribute>
        </xpath>
        <xpath expr="//field[@name='mobile']" position="attributes">
                <attribute name="string">phone2</attribute>
        </xpath>


       
 2.  <xpath expr="//sheet/group/group/field[@name='vat']" position='attributes'>
 <attribute name="string">PAN No.</attribute>
 </xpath>


<xpath expr="//sheet/group/group/field[@name='phone']" position='attributes'>
 <attribute name="string">phone1</attribute>
 </xpath>

 <xpath expr="//sheet/group/group/field[@name='mobile']" position='attributes'>
 <attribute name="string">phone2</attribute>
 </xpath>


    </field>
</record>

<xpath expr="//kanban/field[@name='planned_revenue']" position='attributes'>


 <!--<xpath expr='//kanban/label[@for="planned_revenue"]' position='attributes'>-->
<attribute name="string">Loan Amount</attribute>
</xpath>