HI  Vikas Maharana, 

• You should try below code to make analytic distribution field as readonly False , 

 I hope this is helpful to you.

 Thanks & Regards,

 Email: odoo@devintellecs.com

 Skype: devintelle

Hi,

To make the analytic distribution as read-only, add the following code

  <xpath expr="//field[@name='analytic_distribution]"
                   position="attributes">
                <attribute name="readonly">1</attribute>
            </xpath>

If you want to make this field as read-only false, add the following code

  <xpath expr="//field[@name='analytic_distribution]"
                   position="attributes">
                <attribute name="readonly">0</attribute>
            </xpath>

Hope it helps,