fsm_order.xml

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

    <record id="view_fsm_order_form_inherit_stock" model="ir.ui.view">
        <field name="name">fsm.order.form.stock</field>
        <field name="model">fsm.order</field>
        <field name="inherit_id" ref="fieldservice.fsm_order_form"/>
        <field name="arch" type="xml">
            <div class="oe_button_box" position="inside">
                <field name="picking_ids" invisible="1"/>
                <button type="object"
                        name="action_view_delivery"
                        class="oe_stat_button"
                        icon="fa-truck"
                        attrs="{'invisible': [('delivery_count', '=', 0)]}" groups="base.group_user">
                    <field name="delivery_count" widget="statinfo" string="Delivery"/>
                </button>
            </div>
            <xpath expr="//notebook/page[1]" position="after">
                <page string="Inventory">
                    <group>
                        <group>
                            <field name="Warehouse"/>
                        </group>
                        <group></group>
                    </group>
                    <field name="line_ids" nolabel="1">
                        <tree editable="bottom">
                            <field name="sequence" widget="handle"/>
                            <field name="product_id"
                                   context="{
                                    'quantity': qty_ordered,
                                    'uom': product_uom_id,
                                }"
                            />
                            <field name="name"/>
                            <field name="qty_ordered"
                                   string="Ordered Qty"
                                   context="{
                                    'quantity': qty_ordered,
                                    'uom': product_uom_id,
                                }"
                            />
                            <field name="qty_delivered"/>
                            <field name="product_uom_id"
                                   attrs="{'readonly': [('state', 'in', ('sale', 'done', 'cancel'))]}"
                                   options='{"no_open": True, "no_create": True}'
                                   groups="product.group_uom"/>
                            <field name="state" invisible="1"/>
                        </tree>
                    </field>
                </page>
            </xpath>
        </field>
    </record>

</odoo>