manufacture/repair_sale_order/views/repair_order_view.xml

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

    <record id="view_repair_order_form" model="ir.ui.view">
        <field name="name">repair.order.form.view</field>
        <field name="model">repair.order</field>
        <field name="inherit_id" ref="repair.view_repair_order_form" />
        <field name="arch" type="xml">
            <xpath expr="//button[@name='action_created_invoice']" position="before">
                <button
                    name="action_show_sales_order"
                    type="object"
                    class="oe_stat_button"
                    icon="fa-pencil-square-o"
                    attrs="{'invisible': [('sale_order_count', '=', 0.0)]}"
                    groups="sales_team.group_sale_salesman"
                >
                    <field
                        name="sale_order_count"
                        widget="statinfo"
                        string="Sale Order(s)"
                    />
                </button>
            </xpath>
            <xpath expr="//field[@name='invoice_state']" position="after">
                <field name="create_sale_order" invisible="1" />
            </xpath>
            <xpath expr="//button[@name='action_repair_start']" position="attributes">
                <attribute
                    name="attrs"
                >{'invisible': ['|', ('create_sale_order', '=', True), '&amp;', ('state','!=','confirmed'), '!', '&amp;', ('state','=','ready'), ('invoice_method','=','b4repair')]}</attribute>
            </xpath>
            <xpath expr="//button[@name='action_repair_start']" position="after">
                <button
                    name="action_create_sale_order"
                    type="object"
                    string="Create Sales Order"
                    attrs="{'invisible': ['|', '|', ('create_sale_order', '=', False), ('sale_order_count', '&gt;', 0), ('state','!=','confirmed')]}"
                    class="oe_highlight"
                />
            </xpath>
            <xpath expr="//field[@name='invoice_method']" position="attributes">
                <attribute
                    name="attrs"
                >{'invisible': [('create_sale_order', '=', True)]}</attribute>
            </xpath>
            <xpath expr="//field[@name='location_id']" position="attributes">
                <attribute
                    name="attrs"
                >{'invisible': [('create_sale_order', '=', True)]}</attribute>
            </xpath>
            <xpath
                expr="//field[@name='operations']//tree//field[@name='type']"
                position="attributes"
            >
                <attribute
                    name="attrs"
                >{'column_invisible': [('parent.create_sale_order', '=', True)]}</attribute>
            </xpath>
            <xpath
                expr="//field[@name='operations']//tree//field[@name='lot_id']"
                position="attributes"
            >
                <attribute
                    name="attrs"
                >{'column_invisible': [('parent.create_sale_order', '=', True)]}</attribute>
            </xpath>
            <xpath expr="//field[@name='partner_id']" position="attributes">
                <attribute
                    name="attrs"
                >{'required': ['|', ('create_sale_order', '=', True), ('invoice_method','!=','none')]}</attribute>
            </xpath>
        </field>
    </record>

</odoo>