stock-rma/rma_account/wizards/rma_add_account_move.xml

<?xml version="1.0" ?>
<odoo>

    <record id="view_rma_add_account_move" model="ir.ui.view">
        <field name="name">rma.add.invoice</field>
        <field name="model">rma_add_account_move</field>
        <field name="arch" type="xml">
            <form string="Select Invoice from customer">
                <group>
                    <field
                        name="partner_id"
                        domain="[('customer','=',True)]"
                        string="Customer"
                    />
                </group>
                <separator string="Select Invoices lines to add" />
                <field
                    name="line_ids"
                    domain="[('move_id.partner_id', '=', partner_id),
                       ('move_id.type', '=', 'out_invoice')]"
                >
                    <tree string="Invoice Lines">
                        <field name="move_id" />
                        <field name="name" />
                        <field
                            name="account_id"
                            groups="account.group_account_user"
                        />
                        <field name="quantity" />
                        <field name="product_id" />
                        <field name="product_uom_id" />
                        <field name="price_unit" />
                        <field name="discount" groups="base.group_no_one" />
                        <field name="price_subtotal" />
                        <field name="currency_id" invisible="1" />
                    </tree>
                </field>
                <footer>
                    <button
                        string="Confirm"
                        name="add_lines"
                        type="object"
                        class="oe_highlight"
                    />
                    or
                    <button
                        name="action_cancel"
                        string="Cancel"
                        class="oe_link"
                        special="cancel"
                    />
                </footer>
            </form>
        </field>
    </record>

    <record id="view_rma_add_account_move_supplier" model="ir.ui.view">
        <field name="name">rma.add.invoice.supplier</field>
        <field name="model">rma_add_account_move</field>
        <field name="arch" type="xml">
            <form string="Select Invoice from supplier">
                <group>
                    <field
                        name="partner_id"
                        domain="[('supplier','=',True)]"
                        string="Supplier"
                    />
                </group>
                <separator string="Select Invoices lines to add" />
                <field
                    name="line_ids"
                    domain="[('move_id.partner_id', '=', partner_id),
                       ('move_id.type', '=', 'in_invoice')]"
                >
                    <tree string="Invoice Lines">
                        <field name="move_id" />
                        <field name="name" />
                        <field
                            name="account_id"
                            groups="account.group_account_user"
                        />
                        <field name="quantity" />
                        <field name="product_id" />
                        <field name="product_uom_id" />
                        <field name="price_unit" />
                        <field name="discount" groups="base.group_no_one" />
                        <field name="price_subtotal" />
                        <field name="currency_id" invisible="1" />
                    </tree>
                </field>
                <footer>
                    <button
                        string="Confirm"
                        name="add_lines"
                        type="object"
                        class="oe_highlight"
                    />
                    or
                    <button
                        name="action_cancel"
                        string="Cancel"
                        class="oe_link"
                        special="cancel"
                    />
                </footer>
            </form>
        </field>
    </record>

    <record id="action_rma_add_account_move" model="ir.actions.act_window">
        <field name="name">Add Invoice</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">rma_add_account_move</field>
        <field name="view_mode">form</field>
        <field name="target">new</field>
        <field name="view_id" ref="view_rma_add_account_move" />
        <field
            name="groups_id"
            eval="[(4, ref('rma.group_rma_customer_user'))]"
        />
    </record>

    <record
        id="action_rma_add_account_move_supplier"
        model="ir.actions.act_window"
    >
        <field name="name">Add Invoice</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">rma_add_account_move</field>
        <field name="binding_model_id" ref="rma.model_rma_order_line" />
        <field name="view_mode">form</field>
        <field name="target">new</field>
        <field name="view_id" ref="view_rma_add_account_move_supplier" />
        <field
            name="groups_id"
            eval="[(4, ref('rma.group_rma_supplier_user'))]"
        />
    </record>

    <record id="view_rma_add_account_move_form" model="ir.ui.view">
        <field name="name">rma.order.form - invoice wizard</field>
        <field name="model">rma.order</field>
        <field name="inherit_id" ref="rma.view_rma_form" />
        <field name="arch" type="xml">
            <xpath expr="//header" position="inside">
                <button
                    name="%(action_rma_add_account_move)d"
                    string="Add From Invoice"
                    type="action"
                />
            </xpath>
        </field>
    </record>

    <record id="view_rma_add_account_move_button_form" model="ir.ui.view">
        <field name="name">rma.order.supplier.form - invoice wizard</field>
        <field name="model">rma.order</field>
        <field name="inherit_id" ref="rma.view_rma_supplier_form" />
        <field name="arch" type="xml">
            <xpath expr="//header" position="inside">
                <button
                    name="%(action_rma_add_account_move_supplier)d"
                    string="Add From Invoice"
                    type="action"
                />
            </xpath>
        </field>
    </record>

</odoo>