app/overrides/add_payment_reference_details.rb
Deface::Override.new(
virtual_path: 'spree/admin/payments/_list',
name: 'add_payment_reference_details',
insert_after: "#payments",
text: %q{
<% if bank_transfer_payment = @order.payments.from_bank_transfer.first %>
<fieldset class="no-border-bottom" >
<legend align="center"><%= Spree.t(:payment_reference_details) %></legend>
<table class="index">
<thead>
<tr data-hook="payments_header">
<th><%= Spree.t(:deposited_on) %></th>
<th><%= Spree.t(:bank_name) %></th>
<th><%= Spree.t(:account_no) %></th>
<th><%= Spree.t(:transaction_reference_no) %></th>
<th class="actions"></th>
</tr>
</thead>
<tbody>
<tr>
<td class='align-center'><%= bank_transfer_payment.deposited_on %></td>
<td class='align-center'><%= bank_transfer_payment.bank_name %></td>
<td class='align-center'><%= bank_transfer_payment.account_no %></td>
<td class='align-center'><%= bank_transfer_payment.transaction_reference_no %></td>
</tr>
</tbody>
</table>
</fieldset>
<% end %>
}
)