account_advanced_protection_features/__manifest__.py

@@ -21,6 +21,7 @@
     },
     # always loaded
     "data": [
+        "views/account_journal_views.xml"
     ],
     # only loaded in demonstration mode
     "demo": [],

account_advanced_protection_features/models/__init__.py

@@ -1 +1,2 @@
-from . import account_move
+from . import account_move
+from . import account_journal

account_advanced_protection_features/models/account_journal.py

@@ -0,0 +1,6 @@
+from odoo import models, fields
+
+class AccountJournal(models.Model):
+    _inherit = "account.journal"
+
+    prevent_reset_to_draft_sent_invoice = fields.Boolean("Prevent to reset to draft a sent invoice")

account_advanced_protection_features/models/account_move.py

@@ -8,7 +8,7 @@ class AccountMove(models.Model):
 
     def button_draft(self):
         res = super(AccountMove, self).button_draft()
-        if self.sent_by_email:
+        if self.sent_by_email and self.journal_id.prevent_reset_to_draft_sent_invoice:
             raise UserError(_(
                 "You cannot reset to draft this invoice because it has been sent by email."
             ))

account_advanced_protection_features/views/account_journal_views.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="view_account_journal_form_inherit_prevent_reset_to_draft" model="ir.ui.view">
+        <field name="name">account.journal.form</field>
+        <field name="model">account.journal</field>
+        <field name="inherit_id" ref="account.view_account_journal_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='restrict_mode_hash_table']" position="after">
+                <field
+                        name="prevent_reset_to_draft_sent_invoice"
+                        attrs="{'invisible': [('type', '!=', 'sale')]}"
+                />
+            </xpath>
+        </field>
+    </record>
+</odoo>