wizard/account_payment_line_create_view.xml

+<?xml version="1.0" encoding="utf-8" ?>
+<odoo>
+    <data>
+        <record id="account_payment_line_create_form" model="ir.ui.view">
+            <field name="name">account_payment_line_create.form</field>
+            <field name="model">account.payment.line.create</field>
+            <field
+                name="inherit_id"
+                ref="account_payment_order.account_payment_line_create_form"
+            />
+            <field name="arch" type="xml">
+                <xpath expr="//field[@name='due_date']" position="before">
+                    <field
+                        name="start_date"
+                        attrs="{'invisible': [('date_type', '!=', 'due')]}"
+                    />
+                </xpath>
+                <xpath expr="//field[@name='journal_ids']" position="after">
+                    <field
+                        name="ur_ids"
+                        widget="many2many_tags"
+                        options="{'no_create': 1, 'no_edit': 1}"
+                        placeholder="Laisser vide pour toutes les UR"
+                    />
+                </xpath>
+            </field>
+        </record>
+    </data>
+</odoo>

wizard/scop_deces_wizard.py

+# © 2020 Le Filament (<http://www.le-filament.com>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import models
+
+
+class ScopDecesWizard(models.TransientModel):
+    _inherit = "scop.deces.wizard"
+
+    def deces_action(self):
+        super().deces_action()
+        partner_id = self.env["res.partner"].browse(self.partner_id)
+        mandate_ids = self.env["account.banking.mandate"].search(
+            [
+                ("partner_id", "=", partner_id.id),
+                ("state", "=", "valid"),
+                ("company_id", "=", self.env.company.id),
+            ]
+        )
+        if mandate_ids:
+            for mandate in mandate_ids:
+                mandate.update({"state": "expired"})
+                invoice_ids = self.env["account.move"].search(
+                    [
+                        ("mandate_id", "=", mandate.id),
+                        ("move_type", "in", ("out_invoice", "out_refund")),
+                        ("state", "in", ("draft", "posted")),
+                        ("payment_state", "in", ("draft", "not_paid", "partial")),
+                    ]
+                )
+                mandate._remove_invoice_mandate(invoice_ids)