diff --git a/base_tier_validation/__manifest__.py b/base_tier_validation/__manifest__.py
index 0e818f5f70..63b3307480 100644
--- a/base_tier_validation/__manifest__.py
+++ b/base_tier_validation/__manifest__.py
@@ -3,7 +3,7 @@
 {
     "name": "Base Tier Validation",
     "summary": "Implement a validation process based on tiers.",
-    "version": "14.0.2.7.0",
+    "version": "15.0.1.0.0",
     "development_status": "Mature",
     "maintainers": ["LoisRForgeFlow"],
     "category": "Tools",
@@ -20,9 +20,19 @@
         "views/res_config_settings_views.xml",
         "views/tier_definition_view.xml",
         "views/tier_review_view.xml",
-        "views/assets_backend.xml",
         "wizard/comment_wizard_view.xml",
         "templates/tier_validation_templates.xml",
     ],
-    "qweb": ["static/src/xml/systray.xml", "static/src/xml/tier_review_template.xml"],
+    "assets": {
+        "web.assets_backend": [
+            "/base_tier_validation/static/src/js/systray.js",
+            "/base_tier_validation/static/src/js/tier_review_widget.js",
+            "/base_tier_validation/static/src/scss/systray.scss",
+            "/base_tier_validation/static/src/scss/review.scss",
+        ],
+        "web.assets_qweb": [
+            "base_tier_validation/static/src/xml/systray.xml",
+            "base_tier_validation/static/src/xml/tier_review_template.xml",
+        ],
+    },
 }
diff --git a/base_tier_validation/models/tier_validation.py b/base_tier_validation/models/tier_validation.py
index 002f4cc91d..497de18917 100644
--- a/base_tier_validation/models/tier_validation.py
+++ b/base_tier_validation/models/tier_validation.py
@@ -277,7 +277,7 @@ def _notify_accepted_reviews_body(self):
         )
         if has_comment:
             comment = has_comment.mapped("comment")[0]
-            return _("A review was accepted. (%s)" % comment)
+            return _("A review was accepted. (%s)") % comment
         return _("A review was accepted")
 
     def _add_comment(self, validate_reject, reviews):
@@ -322,9 +322,10 @@ def _notify_rejected_review_body(self):
         )
         if has_comment:
             comment = has_comment.mapped("comment")[0]
-            return _(
-                "A review was rejected by {}. ({})".format(self.env.user.name, comment)
-            )
+            return _("A review was rejected by %(user)s. (%(comment)s)") % {
+                "user": self.env.user.name,
+                "comment": comment,
+            }
         return _("A review was rejected by %s.") % (self.env.user.name)
 
     def _notify_rejected_review(self):
@@ -422,8 +423,8 @@ def _update_counter(self):
         self.review_ids._compute_can_review()
         notifications = []
         channel = "base.tier.validation"
-        notifications.append([channel, {}])
-        self.env["bus.bus"].sendmany(notifications)
+        notifications.append([self.env.user.partner_id, channel, {}])
+        self.env["bus.bus"]._sendmany(notifications)
 
     def unlink(self):
         self.mapped("review_ids").unlink()
diff --git a/base_tier_validation/static/src/xml/systray.xml b/base_tier_validation/static/src/xml/systray.xml
index ab7fd2cc89..5faa47c2be 100644
--- a/base_tier_validation/static/src/xml/systray.xml
+++ b/base_tier_validation/static/src/xml/systray.xml
@@ -59,9 +59,9 @@
         </t>
     </t>
     <t t-name="tier.validation.ReviewMenu">
-        <li class="o_mail_systray_item">
+        <div class="o_mail_systray_item">
             <a
-                class="dropdown-toggle o-no-caret"
+                class="o-dropdown dropdown o-dropdown--no-caret"
                 data-toggle="dropdown"
                 data-display="static"
                 aria-expanded="false"
@@ -78,6 +78,6 @@
             >
                 <div class="o_mail_systray_dropdown_items" />
             </div>
-        </li>
+        </div>
     </t>
 </templates>
diff --git a/base_tier_validation/templates/tier_validation_templates.xml b/base_tier_validation/templates/tier_validation_templates.xml
index b64ca3af23..c19d233076 100644
--- a/base_tier_validation/templates/tier_validation_templates.xml
+++ b/base_tier_validation/templates/tier_validation_templates.xml
@@ -37,7 +37,7 @@
                 <button
                         name="validate_tier"
                         string="Validate"
-                        t-attf-attrs="{'invisible': [('can_review', '=', False)]}"
+                        attrs="{'invisible': [('can_review', '=', False)]}"
                         type="object"
                         class="oe_inline oe_button btn-success"
                         icon="fa-thumbs-up"
@@ -45,7 +45,7 @@
                 <button
                         name="reject_tier"
                         string="Reject"
-                        t-attf-attrs="{'invisible': [('can_review', '=', False)]}"
+                        attrs="{'invisible': [('can_review', '=', False)]}"
                         type="object"
                         class="btn-icon btn-danger"
                         icon="fa-thumbs-down"
diff --git a/base_tier_validation/tests/common.py b/base_tier_validation/tests/common.py
index ac53b6a31a..9ff9e0521f 100644
--- a/base_tier_validation/tests/common.py
+++ b/base_tier_validation/tests/common.py
@@ -6,7 +6,7 @@
 from odoo.tests import common
 
 
-class CommonTierValidation(common.SavepointCase):
+class CommonTierValidation(common.TransactionCase):
     @classmethod
     def setUpClass(cls):
         super(CommonTierValidation, cls).setUpClass()
@@ -76,4 +76,4 @@ def setUpClass(cls):
     @classmethod
     def tearDownClass(cls):
         cls.loader.restore_registry()
-        super(CommonTierValidation, cls).tearDownClass()
+        return super(CommonTierValidation, cls).tearDownClass()
diff --git a/base_tier_validation/tests/test_tier_validation.py b/base_tier_validation/tests/test_tier_validation.py
index 3982adcb67..67760900a5 100644
--- a/base_tier_validation/tests/test_tier_validation.py
+++ b/base_tier_validation/tests/test_tier_validation.py
@@ -157,7 +157,7 @@ def test_11_add_comment(self):
         record.invalidate_cache()
         res = record.validate_tier()
         ctx = res.get("context")
-        wizard = Form(self.env["comment.wizard"].with_context(ctx))
+        wizard = Form(self.env["comment.wizard"].with_context(**ctx))
         wizard.comment = "Test Comment"
         wiz = wizard.save()
         wiz.add_comment()
@@ -192,7 +192,7 @@ def test_11_add_comment_rejection(self):
         record.invalidate_cache()
         res = record.reject_tier()  # Rejection
         ctx = res.get("context")
-        wizard = Form(self.env["comment.wizard"].with_context(ctx))
+        wizard = Form(self.env["comment.wizard"].with_context(**ctx))
         wizard.comment = "Test Comment"
         wiz = wizard.save()
         wiz.add_comment()
diff --git a/base_tier_validation/views/assets_backend.xml b/base_tier_validation/views/assets_backend.xml
deleted file mode 100644
index 152093c35b..0000000000
--- a/base_tier_validation/views/assets_backend.xml
+++ /dev/null
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<odoo>
-    <template id="assets_backend" name="mail assets" inherit_id="web.assets_backend">
-        <xpath expr="." position="inside">
-            <script
-                type="text/javascript"
-                src="/base_tier_validation/static/src/js/systray.js"
-            />
-            <script
-                type="text/javascript"
-                src="/base_tier_validation/static/src/js/tier_review_widget.js"
-            />
-            <link
-                rel="stylesheet"
-                href="/base_tier_validation/static/src/scss/systray.scss"
-                type="text/scss"
-            />
-            <link
-                rel="stylesheet"
-                href="/base_tier_validation/static/src/scss/review.scss"
-                type="text/scss"
-            />
-        </xpath>
-    </template>
-</odoo>
diff --git a/base_tier_validation/views/res_config_settings_views.xml b/base_tier_validation/views/res_config_settings_views.xml
index de0109d33a..382c1ccb4e 100644
--- a/base_tier_validation/views/res_config_settings_views.xml
+++ b/base_tier_validation/views/res_config_settings_views.xml
@@ -6,7 +6,7 @@
         <field name="priority" eval="25" />
         <field name="inherit_id" ref="base_setup.res_config_settings_view_form" />
         <field name="arch" type="xml">
-            <xpath expr="//div[@id='business_documents']" position="inside">
+            <xpath expr="//div[@id='companies']" position="inside">
                 <div id="base_tier_validation">
                     <h2>Tier Validation</h2>
                     <div
diff --git a/base_tier_validation/views/tier_definition_view.xml b/base_tier_validation/views/tier_definition_view.xml
index a2ac1a260b..6e68a06a60 100644
--- a/base_tier_validation/views/tier_definition_view.xml
+++ b/base_tier_validation/views/tier_definition_view.xml
@@ -6,7 +6,7 @@
         <field name="name">tier.definition.tree</field>
         <field name="model">tier.definition</field>
         <field name="arch" type="xml">
-            <tree string="Tier Definition">
+            <tree>
                 <field name="model_id" />
                 <field name="name" />
                 <field name="review_type" />
diff --git a/base_tier_validation/views/tier_review_view.xml b/base_tier_validation/views/tier_review_view.xml
index 3bef6f0975..2c9fa538c0 100644
--- a/base_tier_validation/views/tier_review_view.xml
+++ b/base_tier_validation/views/tier_review_view.xml
@@ -7,7 +7,6 @@
         <field name="model">tier.review</field>
         <field name="arch" type="xml">
             <tree
-                string="Tier Review"
                 decoration-danger="status=='rejected'"
                 decoration-success="status=='approved'"
             >