diff --git a/tariff_app/locale/ru/LC_MESSAGES/django.po b/tariff_app/locale/ru/LC_MESSAGES/django.po
index 3c8b803..72211d2 100644
--- a/tariff_app/locale/ru/LC_MESSAGES/django.po
+++ b/tariff_app/locale/ru/LC_MESSAGES/django.po
@@ -215,3 +215,6 @@ msgstr "Вы уверены что хотите удалить тариф?"
 
 msgid "IS Daily service"
 msgstr "Услуга на сутки"
+
+msgid "Service with this Speed In, Speed Out, Price and Script already exists."
+msgstr "Услуга с такой скоростью, ценой и логикой уже есть"
diff --git a/tariff_app/models.py b/tariff_app/models.py
index 6ca5e04..1698403 100644
--- a/tariff_app/models.py
+++ b/tariff_app/models.py
@@ -54,6 +54,7 @@ class Tariff(models.Model):
         ordering = ('title',)
         verbose_name = _('Service')
         verbose_name_plural = _('Services')
+        unique_together = ('speedIn', 'speedOut', 'amount', 'calc_type')
 
 
 class PeriodicPay(models.Model):
diff --git a/tariff_app/templates/tariff_app/editTarif.html b/tariff_app/templates/tariff_app/editTarif.html
index d151da0..8be8cd1 100644
--- a/tariff_app/templates/tariff_app/editTarif.html
+++ b/tariff_app/templates/tariff_app/editTarif.html
@@ -24,6 +24,8 @@
         <div class="panel-body">
             <form action="{% url 'tarifs:edit' tarif_id %}" method="post">{% csrf_token %}
 
+                {% bootstrap_form_errors form %}
+
                 {% bootstrap_icon 'tag' as ic %}
                 {% bootstrap_field form.title addon_before=ic %}
 
diff --git a/tariff_app/tests.py b/tariff_app/tests.py
new file mode 100644
index 0000000..84cc318
--- /dev/null
+++ b/tariff_app/tests.py
@@ -0,0 +1,64 @@
+from abc import ABCMeta
+
+from django.conf import settings
+from django.shortcuts import resolve_url
+from django.test import TestCase
+
+from accounts_app.models import UserProfile
+from group_app.models import Group
+from tariff_app.models import Tariff
+
+
+class MyBaseTestCase(metaclass=ABCMeta):
+    def _client_get_check_login(self, url):
+        """
+        Checks if url is protected from unauthorized access
+        :param url:
+        :return: authorized response
+        """
+        r = self.client.get(url)
+        self.assertRedirects(r, "%s?next=%s" % (getattr(settings, 'LOGIN_URL'), url))
+        self.client.force_login(self.adminuser)
+        r = self.client.get(url)
+        self.assertEqual(r.status_code, 200)
+        return r
+
+    def setUp(self):
+        grp = Group.objects.create(title='Grp1')
+        my_admin = UserProfile.objects.create_superuser('+79781234567', 'local_superuser', 'ps')
+        self.adminuser = my_admin
+        self.group = grp
+
+
+class ServiceTestCase(MyBaseTestCase, TestCase):
+    def setUp(self):
+        super(ServiceTestCase, self).setUp()
+        trf = Tariff.objects.create(
+            title='test',
+            descr='Some descr',
+            speedIn=10.0,
+            speedOut=2.0,
+            amount=1.0,
+            calc_type='Df'
+        )
+        trf.groups.add(self.group.pk)
+        trf.save()
+        self.tariff = trf
+
+    def test_add_same_services(self):
+        print('test_add_same_services')
+        url = resolve_url('tariff_app:add')
+        self._client_get_check_login(url)
+        self.client.post(url, data={
+            'title': 'same srv',
+            'descr': 'descriptive',
+            'speedIn': 10.0,
+            'speedOut': 2.0,
+            'amount': 1.0,
+            'calc_type': 'Df'
+        })
+        try:
+            Tariff.objects.get(title='same srv')
+            raise self.failureException('Services cannot be saved because it duplicates other service')
+        except Tariff.DoesNotExist:
+            pass