<data priority="50">
  <xpath expr="//p[@name='payment_communication']" position="replace">

    <p t-if="o.move_type in ('out_invoice', 'in_refund') and o.payment_reference" name="payment_communication" class="mt-4">
      Please use the following communication for your payment : <b>
      <span t-field="o.payment_reference"/>
      </b>
    </p>

  </xpath>
</data>
