diff --git a/blazar/manager/service.py b/blazar/manager/service.py
index b676335a..b10a7f65 100644
--- a/blazar/manager/service.py
+++ b/blazar/manager/service.py
@@ -253,7 +253,7 @@ class ManagerService(service_utils.RPCServer):
         end_date = self._date_from_string(end_date)
 
         if start_date < now:
-            raise common_ex.NotAuthorized(
+            raise common_ex.InvalidInput(
                 'Start date must be later than current date')
 
         if end_date <= start_date:
@@ -383,21 +383,21 @@ class ManagerService(service_utils.RPCServer):
 
         if (lease['start_date'] < now and
                 values['start_date'] != lease['start_date']):
-            raise common_ex.NotAuthorized(
+            raise common_ex.InvalidInput(
                 'Cannot modify the start date of already started leases')
 
         if (lease['start_date'] > now and
                 values['start_date'] < now):
-            raise common_ex.NotAuthorized(
+            raise common_ex.InvalidInput(
                 'Start date must be later than current date')
 
         if lease['end_date'] < now:
-            raise common_ex.NotAuthorized(
+            raise common_ex.InvalidInput(
                 'Terminated leases can only be renamed')
 
         if (values['end_date'] < now or
            values['end_date'] < values['start_date']):
-            raise common_ex.NotAuthorized(
+            raise common_ex.InvalidInput(
                 'End date must be later than current and start date')
 
         with trusts.create_ctx_from_trust(lease['trust_id']):
diff --git a/blazar/tests/manager/test_service.py b/blazar/tests/manager/test_service.py
index d80b0de9..2ce7b865 100644
--- a/blazar/tests/manager/test_service.py
+++ b/blazar/tests/manager/test_service.py
@@ -656,7 +656,7 @@ class ServiceTestCase(tests.TestCase):
             'trust_id': 'exxee111qwwwwe'}
 
         self.assertRaises(
-            exceptions.NotAuthorized, self.manager.create_lease, lease_values)
+            exceptions.InvalidInput, self.manager.create_lease, lease_values)
 
     def test_create_lease_end_before_start(self):
         lease_values = {
@@ -1220,7 +1220,7 @@ class ServiceTestCase(tests.TestCase):
                                mock.Mock(wraps=datetime.datetime)) as patched:
             patched.utcnow.return_value = target
             self.assertRaises(
-                exceptions.NotAuthorized, self.manager.update_lease,
+                exceptions.InvalidInput, self.manager.update_lease,
                 lease_id=self.lease_id, values=lease_values)
 
     def test_update_lease_not_started_start_date_before_current_time(self):
@@ -1234,7 +1234,7 @@ class ServiceTestCase(tests.TestCase):
                                mock.Mock(wraps=datetime.datetime)) as patched:
             patched.utcnow.return_value = target
             self.assertRaises(
-                exceptions.NotAuthorized, self.manager.update_lease,
+                exceptions.InvalidInput, self.manager.update_lease,
                 lease_id=self.lease_id, values=lease_values)
 
     def test_update_lease_end_date_before_current_time(self):
@@ -1248,7 +1248,7 @@ class ServiceTestCase(tests.TestCase):
                                mock.Mock(wraps=datetime.datetime)) as patched:
             patched.utcnow.return_value = target
             self.assertRaises(
-                exceptions.NotAuthorized, self.manager.update_lease,
+                exceptions.InvalidInput, self.manager.update_lease,
                 lease_id=self.lease_id, values=lease_values)
 
     def test_update_lease_completed_modify_dates(self):
@@ -1262,7 +1262,7 @@ class ServiceTestCase(tests.TestCase):
                                mock.Mock(wraps=datetime.datetime)) as patched:
             patched.utcnow.return_value = target
             self.assertRaises(
-                exceptions.NotAuthorized, self.manager.update_lease,
+                exceptions.InvalidInput, self.manager.update_lease,
                 lease_id=self.lease_id, values=lease_values)
 
     def test_update_lease_start_date_event_not_found(self):