The printing of the payment receipt on any payment registered in Odoo 12, inserts only the invoices reconciled with the payment amount. But there is the addon account_voucher that generates vouchers of purchases and sales that, like the invoices, can be reconciled.

Within the Qweb of payment receipts there is a foreach with the ids of reconciled invoices, instead of that list I would like to insert the lines of reconciled vouchers, or both, invoices and vouchers  

.

.

.

<tbody>
<tr t-foreach="o.reconciled_invoice_ids" t-as="inv">
<td><span t-field="inv.date_invoice"/></td>
<td><span t-field="inv.number"/></td>
<td class="text-right"><span t-field="inv.amount_total"/></td>
<td class="text-right"><span t-esc="o._get_invoice_payment_amount(inv)" t-options="{'widget': 'monetary', 'display_currency': inv.currency_id}"/></td>
<td class="text-right"><span t-field="inv.residual"/></td>
</tr>
</tbody>