sale_exceptions/sale_view.xml

<?xml version="1.0" ?>
<openerp>
    <data>

        <record id="view_sale_exception_tree" model="ir.ui.view">
            <field name="name">sale.exception.tree</field>
            <field name="model">sale.exception</field>
            <field name="arch" type="xml">
                <tree string="Sale Exception">
                    <field name="active"/>
                    <field name="name"/>
                    <field name="description"/>
                    <field name="model"/>
                    <field name="sequence"/>
                </tree>
            </field>
        </record>

        <record id="view_sale_exception_form" model="ir.ui.view">
            <field name="name">sale.exception.form</field>
            <field name="model">sale.exception</field>
            <field name="arch" type="xml">
                <form string="Sale Exception Setup">
                    <group colspan="4" col="2">
                        <field name="name"/>
                        <field name="description"/>
                    </group>
                    <group col="4" colspan="4" groups="base.group_sale_manager">
                        <field name="active"/>
                        <field name="sequence"/>
                        <group colspan="4" col="2" groups="base.group_system">
                            <field name="model"/>
                            <field name="code"/>
                        </group>
                    </group>
                    <group colspan="4" col="2">
                        <separator string="Affected Sales Orders"/>
                        <newline/>
                        <field name="sale_order_ids" nolabel="1" domain="[('state', '=', 'draft')]"/>
                    </group>
                </form>
            </field>
        </record>

        <record id="action_sale_test_tree" model="ir.actions.act_window">
                  <field name="name">Exception Rules</field>
                  <field name="res_model">sale.exception</field>
                  <field name="view_type">form</field>
                  <field name="view_mode">tree,form</field>
                  <field name="view_id" ref="view_sale_exception_tree"/>
                  <field name="context">{'active_test': False}</field>
              </record>

        <menuitem action="action_sale_test_tree" id="menu_sale_test" parent="base.menu_sale_config_sales" />


        <record id="view_order_form" model="ir.ui.view">
            <field name="name">sale_exceptions.view_order_form</field>
            <field name="model">sale.order</field>
            <field name="inherit_id" ref="sale.view_order_form"/>
            <field name="arch" type="xml">
                <field name="name" position="after">
                    <group>
                    <field name="main_exception_id" options='{"no_open": True}'
                           class="oe_inline" string="Error:"
                           attrs="{'invisible':[('main_exception_id','=', False)]}"/>
                    </group>
                </field>
                <xpath expr="//page[@string='Other Information']/group"
                        position="inside">
                    <group name="exception" colspan="2" col="2">
                        <separator string="Exception" colspan="2"/>
                        <field name="exception_ids" colspan="2" nolabel="1"/>
                    </group>
                </xpath>
            </field>
        </record>

        <record id="view_order_tree" model="ir.ui.view">
            <field name="name">sale_exceptions.view_order_tree</field>
            <field name="model">sale.order</field>
            <field name="inherit_id" ref="sale.view_order_tree"/>
            <field name="arch" type="xml">
                <field name="state" position="after">
                    <field name="main_exception_id"/>
                </field>
            </field>
        </record>

        <record id="view_quotation_tree" model="ir.ui.view">
            <field name="name">sale_exceptions.view_order_tree</field>
            <field name="model">sale.order</field>
            <field name="inherit_id" ref="sale.view_quotation_tree"/>
            <field name="arch" type="xml">
                <field name="state" position="after">
                    <field name="main_exception_id"/>
                </field>
            </field>
        </record>

        <record id="view_sales_order_filter" model="ir.ui.view">
            <field name="name">sale_exceptions.view_sales_order_filter</field>
            <field name="model">sale.order</field>
            <field name="inherit_id" ref="sale.view_sales_order_filter" />
            <field name="arch" type="xml">
                <filter name="sales" position="after">
                    <separator orientation="vertical"/>
                    <filter icon="terp-emblem-important" name="tofix" string="Blocked in draft" domain="[('main_exception_id','!=',False)]"/>
                </filter>
            </field>
        </record>
    </data>
</openerp>