Hi,

To address the issue, you can use the attrs attribute to conditionally set the readonly property based on the value of fixed_assets_user_type_name. Here's an example of how you can modify your XML code:

In this example, replace your_view_id, your.view.name, your.model, your_column_name with your actual view ID, view name, model, and the name of the column you want to hide or make readonly.

<odoo>
    <data>
        <record id="view_res_partner_form_inherit" model="ir.ui.view">
            <field name="name">res.partner.form.inherit</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="arch" type="xml">
                <xpath expr="//page[@name='contacts']/group[@name='contact']/field[@name='function']" position="after">
                    <field name="product_ids" widget="many2many_tags" options="{'no_create': True}" context="{'default_vendor_id': id}"/>
                </xpath>
            </field>
        </record>
    </data>
</odoo>

Hope it helps