account_view.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>

	<record model="ir.ui.view" id="reconcile_account_payment_form">
		<field name="name">reconcile.account.payment.form</field>
		<field name="model">account.payment</field>
		<field name="inherit_id" ref="account.view_account_payment_form"></field>
		<field name="arch" type="xml">
			<field name="state" position="before">
				<button name="btn_add_invoices" type="object"
					string="Agregar Facturas" 
					attrs="{'invisible': [('state','not in',['draft']),('payment_type','not in',['inbound'])]}" />
				<!-- button name="btn_payment_reconcile" type="object"
					string="Seleccionar Facturas" 
					attrs="{'invisible': [('state','not in',['posted']),('payment_type','not in',['inbound'])]}" / -->
			</field>
			<xpath expr="//sheet" position="inside">
				<notebook>
					<page string="Facturas">
						<br />
						<group>
							<field name="reconcile_ids">
								<tree create="0" edit="0">
									<field name="move_id" />
									<field name="amount" sum = "total amount"/>
									<field name="amount_residual" sum = "total residual" />
									<field name="amount_currency" sum = "total currency"/>
									<field name="amount_residual_currency" sum = "total amount"/>
									<field name="account_id" />
									<field name="currency_id" />
								</tree>
							</field>
						</group>
						<group>
							<field name="exchange_move_id" readonly="1" />
						</group>
					</page>
				</notebook>
			</xpath>
		</field>
	</record>


</odoo>