oca-ocb-l10n_me-africa/odoo-bringout-oca-ocb-l10n_sa/l10n_sa/views/account_move_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>
        <record id="view_move_form_inherit_l10n_sa" model="ir.ui.view">
            <field name="name">account.move.form.inherit.l10n_sa</field>
            <field name="model">account.move</field>
            <field name="inherit_id" ref="account.view_move_form"/>
            <field name="arch" type="xml">
                <group name="sale_info_group" position="inside">
                    <field name="l10n_sa_reason" invisible="not l10n_sa_show_reason" readonly="state != 'draft'"/>
                </group>
                <xpath expr="//page[@id='other_tab']//field[@name='delivery_date']" position="after">
                    <field name="l10n_sa_confirmation_datetime" invisible="country_code != 'SA' or move_type not in ('out_invoice', 'out_refund')" />
                </xpath>
            </field>
        </record>
    </data>
</odoo>