Hi Abdallah

That should be in  covered in standrad odoo

But depending on your usecase (which is not clear in your question) there are some apps in the appstore that cover your case 

here and example
https://apps.odoo.com/apps/modules/15.0/mai_pos_lotnumer_selection

Otherwise you will may need to create a custom module

In this case you have ti extend the report

<t t-name="OrderLinesReceipt" owl="1">
.....
<t t-if="line.pack_lot_lines">
    <div class="pos-receipt-left-padding">
        <ul>
            <t t-foreach="line.pack_lot_lines" t-as="lot" t-key="lot.cid">
                <li>
                    <t t-if="lot.order_line.product.tracking == 'lot'">
                        Lot Number <t t-esc="lot.lot_name"/> <!- you can add here your lot.reference  ->
                    </t>
                    <t t-else="">
                        SN <t t-esc="lot.lot_name"/>
                    </t>
                </li>
            </t>
        </ul>
    </div>
</t>