trytond-account_payment_bank_discount/view/bank_statement_move_line_tree.xml

<?xml version="1.0"?>
<!-- The COPYRIGHT file at the top level of this repository contains the full
     copyright notices and license terms. -->
<data>
    <xpath expr="/tree/field[@name='invoice']" position="after">
        <field name="payment"/>
    </xpath>
</data>