diff --git a/CHANGELOG b/CHANGELOG
index 549333a55..118e79ecf 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -21,7 +21,7 @@ Core:
 
 Motions:
 - Added origin field.
-- Added button to number all motions in a category.
+- Added button to sort and number all motions in a category.
 
 Users:
 - Added field is_committee and new default group Committees.
diff --git a/openslides/motions/views.py b/openslides/motions/views.py
index a895cb8a6..703558528 100644
--- a/openslides/motions/views.py
+++ b/openslides/motions/views.py
@@ -307,6 +307,11 @@ class CategoryViewSet(ModelViewSet):
         Special view endpoint to number all motions in this category.
 
         Only managers can use this view.
+
+        Send POST {'motions': [<list of motion ids>]} to sort the given
+        motions in a special order. Ids of motions which do not belong to
+        the category are just ignored. Send just POST {} to sort all
+        motions in the category by id.
         """
         category = self.get_object()
         number = 0
@@ -314,13 +319,20 @@ class CategoryViewSet(ModelViewSet):
             prefix = ''
         else:
             prefix = '%s ' % category.prefix
+        motions = category.motion_set.all()
+        motion_list = request.data.get('motions')
+        if motion_list:
+            motion_dict = {}
+            for motion in motions.filter(id__in=motion_list):
+                motion_dict[motion.pk] = motion
+            motions = [motion_dict[pk] for pk in motion_list]
 
         with transaction.atomic():
-            for motion in category.motion_set.all():
+            for motion in motions:
                 motion.identifier = None
                 motion.save()
 
-            for motion in category.motion_set.all():
+            for motion in motions:
                 if motion.is_amendment():
                     parent_identifier = motion.parent.identifier or ''
                     prefix = '%s %s ' % (parent_identifier, config['motions_amendments_prefix'])
diff --git a/tests/integration/motions/test_viewset.py b/tests/integration/motions/test_viewset.py
index 55f10a734..f18c5aaf2 100644
--- a/tests/integration/motions/test_viewset.py
+++ b/tests/integration/motions/test_viewset.py
@@ -487,3 +487,21 @@ class NumberMotionsInCategory(TestCase):
         self.assertEqual(response.data, {'detail': 'All motions in category test_cateogory_name_zah6Ahd4Ifofaeree6ai numbered successfully.'})
         self.assertEqual(Motion.objects.get(pk=self.motion.pk).identifier, 'test_prefix_ahz6tho2mooH8 1')
         self.assertEqual(Motion.objects.get(pk=self.motion_2.pk).identifier, 'test_prefix_ahz6tho2mooH8 2')
+
+    def test_numbering_with_given_order(self):
+        self.motion_3 = Motion(
+            title='test_title_eeb0kua5ciike4su2auJ',
+            text='test_text_ahshuGhaew3eim8yoht7',
+            category=self.category)
+        self.motion_3.save()
+        self.motion_3.identifier = ''
+        self.motion_3.save()
+        response = self.client.post(
+            reverse('category-numbering', args=[self.category.pk]),
+            {'motions': [3, 2]},
+            format='json')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, {'detail': 'All motions in category test_cateogory_name_zah6Ahd4Ifofaeree6ai numbered successfully.'})
+        self.assertEqual(Motion.objects.get(pk=self.motion.pk).identifier, None)
+        self.assertEqual(Motion.objects.get(pk=self.motion_2.pk).identifier, 'test_prefix_ahz6tho2mooH8 2')
+        self.assertEqual(Motion.objects.get(pk=self.motion_3.pk).identifier, 'test_prefix_ahz6tho2mooH8 1')