odoo16/addons/purchase_price_diff/views/product_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="view_category_property_form" model="ir.ui.view">
        <field name="name">product.category.property.form.inherit.stock</field>
        <field name="model">product.category</field>
        <field name="inherit_id" ref="account.view_category_property_form"/>
        <field name="arch" type="xml">
            <field name="property_account_income_categ_id" position="before">
                <field name="property_account_creditor_price_difference_categ"
                    domain="[('deprecated','=',False)]" groups="account.group_account_readonly"
                    attrs="{'invisible':[('property_valuation', '=', 'manual_periodic')]}"/>
            </field>
        </field>
    </record>

    <record id="product_template_form_view" model="ir.ui.view">
        <field name="name">product.normal.form.inherit.stock</field>
        <field name="model">product.template</field>
        <field name="inherit_id" ref="account.product_template_form_view"/>
        <field name="arch" type="xml">
            <field name="property_account_expense_id" position="after">
                <field name="property_account_creditor_price_difference" domain="[('deprecated','=',False)]" attrs="{'readonly':[('purchase_ok', '=', 0)]}" groups="account.group_account_readonly"/>
            </field>
        </field>
    </record>
</odoo>