account-financial-tools/account_loan/views/account_move_view.xml

<?xml version="1.0" encoding="utf-8" ?>
<!-- Copyright 2011 Alexis de Lattre <alexis.delattre@akretion.com>
     Copyright 2016 Antonio Espinosa <antonio.espinosa@tecnativa.com>
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
<odoo>
    <record id="view_move_form" model="ir.ui.view">
        <field name="name">Add to_be_reversed and reversal_id fields</field>
        <field name="model">account.move</field>
        <field name="inherit_id" ref="account.view_move_form" />
        <field name="arch" type="xml">
            <field name="company_id" position="after">
                <field
                    name="loan_line_id"
                    attrs="{'invisible': [('loan_line_id', '=', False)]}"
                    readonly="True"
                />
            </field>
        </field>
    </record>
</odoo>