<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record id="purchase_order_form" model="ir.ui.view">
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_form" />
        <field name="arch" type="xml">
            <field name="currency_id" position="after">
                <field
                    name="picking_state"
                    attrs="{'invisible':[('picking_state','=', 'draft')]}"
                />
            </field>
        </field>
    </record>
    <record id="purchase_order_tree" model="ir.ui.view">
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_tree" />
        <field name="arch" type="xml">
            <field name="state" position="after">
                <field
                    name="picking_state"
                    attrs="{'invisible':[('picking_state','=', 'draft')]}"
                />
            </field>
        </field>
    </record>
</odoo>

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record id="purchase_order_form" model="ir.ui.view">
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_form" />
        <field name="arch" type="xml">
            <field name="currency_id" position="after">
                <field
                    name="picking_state"
                    attrs="{'invisible':[('picking_state','=', 'draft')]}"
                />
            </field>
        </field>
    </record>
    <record id="purchase_order_tree" model="ir.ui.view">
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_tree" />
        <field name="arch" type="xml">
            <field name="state" position="after">
                <field
                    name="picking_state"
                    attrs="{'invisible':[('picking_state','=', 'draft')]}"
                />
            </field>
        </field>
    </record>
    <record id="purchase_order_view_tree" model="ir.ui.view">
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_view_tree" />
        <field name="arch" type="xml">
            <field name="state" position="after">
                <field
                    name="picking_state"
                    optional="hide"
                    attrs="{'invisible':[('picking_state','=', 'draft')]}"
                />
            </field>
        </field>
    </record>
</odoo>

Add picking_state field to purchase order view tree. TT37597
[IMP] purchase_picking_state: Add picking_state field to purchase order view tree.
TT37597
