sale.xml

<?xml version="1.0"?>
<tryton>
    <data>
        <record model="ir.ui.view" id="sale_view_form">
            <field name="model">sale.sale</field>
            <field name="inherit" ref="sale.sale_view_form"/>
            <field name="name">sale_form</field>
        </record>
        <record model="ir.ui.view" id="sale_view_tree">
            <field name="model">sale.sale</field>
            <field name="inherit" ref="sale.sale_view_tree"/>
            <field name="name">sale_tree</field>
        </record>

        <record model="ir.rule.group" id="rule_group_sale">
            <field name="model" search="[('model', '=', 'sale.sale')]"/>
            <field name="global_p" eval="False"/>
            <field name="default_p" eval="True"/>
            <field name="perm_read" eval="True"/>
            <field name="perm_write" eval="False"/>
            <field name="perm_create" eval="False"/>
            <field name="perm_delete" eval="False"/>
        </record>
        <record model="ir.rule" id="rule_sale1">
            <field name="domain" eval="[('channel', 'in', Eval('user', {}).get('allowed_read_channels', []))]" pyson="1"/>
            <field name="rule_group" ref="rule_group_sale"/>
        </record>
    </data>
</tryton>