diff --git a/addons/crm/wizard/crm_lead_to_opportunity.py b/addons/crm/wizard/crm_lead_to_opportunity.py
index b24314c75af..3e7f44f5573 100644
--- a/addons/crm/wizard/crm_lead_to_opportunity.py
+++ b/addons/crm/wizard/crm_lead_to_opportunity.py
@@ -12,13 +12,17 @@ class Lead2OpportunityPartner(models.TransientModel):
 
     @api.model
     def default_get(self, fields):
-
         """ Allow support of active_id / active_model instead of jut default_lead_id
         to ease window action definitions, and be backward compatible. """
         result = super(Lead2OpportunityPartner, self).default_get(fields)
 
         if not result.get('lead_id') and self.env.context.get('active_id'):
             result['lead_id'] = self.env.context.get('active_id')
+
+        if result.get('lead_id'):
+            if self.env['crm.lead'].browse(result['lead_id']).probability == 100:
+                raise UserError(_("Closed/Dead leads cannot be converted into opportunities."))
+
         return result
 
     name = fields.Selection([
@@ -105,15 +109,6 @@ class Lead2OpportunityPartner(models.TransientModel):
             team = self.env['crm.team']._get_default_team_id(user_id=user.id, domain=None)
             convert.team_id = team.id
 
-    @api.model
-    def view_init(self, fields):
-        # JEM TDE FIXME: clean that brol
-        """ Check some preconditions before the wizard executes. """
-        for lead in self.env['crm.lead'].browse(self._context.get('active_ids', [])):
-            if lead.probability == 100:
-                raise UserError(_("Closed/Dead leads cannot be converted into opportunities."))
-        return False
-
     def action_apply(self):
         if self.name == 'merge':
             result_opportunity = self._action_merge()
diff --git a/odoo/addons/base/tests/__init__.py b/odoo/addons/base/tests/__init__.py
index 05ba4548bde..5aec91b00e7 100644
--- a/odoo/addons/base/tests/__init__.py
+++ b/odoo/addons/base/tests/__init__.py
@@ -7,6 +7,7 @@ from . import test_api
 from . import test_base
 from . import test_basecase
 from . import test_cache
+from . import test_deprecation
 from . import test_db_cursor
 from . import test_expression
 from . import test_float
diff --git a/odoo/addons/base/tests/test_deprecation.py b/odoo/addons/base/tests/test_deprecation.py
new file mode 100644
index 00000000000..9e74e4a5263
--- /dev/null
+++ b/odoo/addons/base/tests/test_deprecation.py
@@ -0,0 +1,26 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import inspect
+
+from odoo.tests.common import TransactionCase, tagged
+
+DEPRECATED_MODEL_ATTRIBUTES = [
+    'view_init',
+]
+
+
+@tagged('-at_install', 'post_install', 'deprecation')
+class TestModelDeprecations(TransactionCase):
+
+    def test_model_attributes(self):
+        for model_name, Model in self.registry.items():
+            for attr in DEPRECATED_MODEL_ATTRIBUTES:
+                with self.subTest(model=model_name, attr=attr):
+                    value = getattr(Model, attr, None)
+                    if value is None:
+                        continue
+                    msg = f"Deprecated method/attribute {model_name}.{attr}"
+                    module = inspect.getmodule(value)
+                    if module:
+                        msg += f" in {module}"
+                    self.fail(msg)
diff --git a/odoo/models.py b/odoo/models.py
index aab48dab9f5..f070b3937ba 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -538,13 +538,6 @@ class BaseModel(metaclass=MetaModel):
 
     CONCURRENCY_CHECK_FIELD = '__last_update'
 
-    @api.model
-    def view_init(self, fields_list):
-        """ Override this method to do specific things when a form view is
-        opened. This method is invoked by :meth:`~default_get`.
-        """
-        pass
-
     def _valid_field_parameter(self, field, name):
         """ Return whether the given parameter name is valid for the field. """
         return name == 'related_sudo'
@@ -1389,9 +1382,6 @@ class BaseModel(metaclass=MetaModel):
             Unrequested defaults won't be considered, there is no need to return a
             value for fields whose names are not in `fields_list`.
         """
-        # trigger view init hook
-        self.view_init(fields_list)
-
         defaults = {}
         parent_fields = defaultdict(list)
         ir_defaults = self.env['ir.default'].get_model_defaults(self._name)