Hi,

To include both the attribute names and their values in the product description, along with the product name in the PDF report, use the following code:

<template id="report_saleorder_document_inherited" inherit_id="sale.report_saleorder_document">
<xpath expr="//table[hasclass('o_main_table')]/tbody[@class='sale_tbody']//t[@t-if='not line.display_type']/td[@name='td_name']"
               position="replace">
            <td name="td_name">
<span t-field="line.name"/>
<t t-if="line.product_id.attribute_line_ids">
                    <br/>
<t t-foreach="line.product_id.attribute_line_ids" t-as="attr_line">
<span t-field="attr_line.attribute_id.name"/>:
<t t-set="values" t-value="attr_line.value_ids.mapped('name')"/>
                        <span t-esc="', '.join(values)"/>
                        <br/>
                    </t>
                </t>
            </td>
        </xpath>
    </template>

Hope it helps