contract/project_sla/project_sla_control_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>

        <!-- List view used when the sla_control_ids field
             is added to controlled document's form -->
        <record id="view_sla_control_tree" model="ir.ui.view">
            <field name="name">view_sla_control_tree</field>
            <field name="model">project.sla.control</field>
            <field name="arch" type="xml">

                <tree string="Service Level">
                    <field name="sla_line_id"/>
                    <field name="sla_state"/>
                    <field name="sla_start_date"/>
                    <field name="sla_warn_date"/>
                    <field name="sla_limit_date"/>
                    <field name="sla_close_date"/>
                </tree>

            </field>
        </record>

    </data>
</openerp>