diff --git a/openslides/assignments/serializers.py b/openslides/assignments/serializers.py
index 3effc730b..72a776852 100644
--- a/openslides/assignments/serializers.py
+++ b/openslides/assignments/serializers.py
@@ -1,12 +1,15 @@
+from django.contrib.contenttypes.models import ContentType
 from django.db import transaction
 from django.utils.translation import ugettext as _
 
+from openslides.agenda.models import Item
 from openslides.utils.rest_api import (
     DictField,
     IntegerField,
     ListField,
     ListSerializer,
     ModelSerializer,
+    SerializerMethodField,
     ValidationError,
 )
 
@@ -156,6 +159,7 @@ class AssignmentFullSerializer(ModelSerializer):
     """
     Serializer for assignment.models.Assignment objects. With all polls.
     """
+    agenda_items = SerializerMethodField()
     assignment_related_users = AssignmentRelatedUserSerializer(many=True, read_only=True)
     polls = AssignmentAllPollSerializer(many=True, read_only=True)
 
@@ -170,14 +174,22 @@ class AssignmentFullSerializer(ModelSerializer):
             'assignment_related_users',
             'poll_description_default',
             'polls',
-            'tags',)
+            'tags',
+            'agenda_items',)
+
+    def get_agenda_items(self, obj):
+        """
+        Returns a list of ids of all agenda items that are related to this
+        assignment.
+        """
+        assignment_content_type = ContentType.objects.get_for_model(obj)
+        return (item.pk for item in Item.objects.filter(content_type=assignment_content_type, object_id=obj.pk))
 
 
 class AssignmentShortSerializer(AssignmentFullSerializer):
     """
     Serializer for assignment.models.Assignment objects. Without unpublished poll.
     """
-    assignment_related_users = AssignmentRelatedUserSerializer(many=True, read_only=True)
     polls = AssignmentShortPollSerializer(many=True, read_only=True)
 
     class Meta:
@@ -191,4 +203,5 @@ class AssignmentShortSerializer(AssignmentFullSerializer):
             'assignment_related_users',
             'poll_description_default',
             'polls',
-            'tags',)
+            'tags',
+            'agenda_items',)
diff --git a/openslides/assignments/views.py b/openslides/assignments/views.py
index f249df58e..e53d5f6e5 100644
--- a/openslides/assignments/views.py
+++ b/openslides/assignments/views.py
@@ -15,6 +15,7 @@ from reportlab.platypus import (
     TableStyle,
 )
 
+from openslides.agenda.models import Item
 from openslides.config.api import config
 from openslides.users.models import Group, User  # TODO: remove this
 from openslides.utils.pdf import stylesheet
@@ -213,6 +214,25 @@ class AssignmentViewSet(ModelViewSet):
             assignment.create_poll()
         return Response({'detail': _(' Poll created successfully.')})
 
+    @detail_route(methods=['post'])
+    def create_agenda_item(self, request, pk=None):
+        """
+        Speacial view endpoint to create an agenda item that is related to
+        this assignment.
+        """
+        # Check permission.
+        if not request.user.has_perm('assignments.can_manage'):
+            self.permission_denied(request)
+
+        # Retrieve motion.
+        assignment = self.get_object()
+
+        # Create agenda item.
+        Item.objects.create(content_object=assignment)
+
+        # Initiate response.
+        return Response({'detail': _('Agenda item successfully created.')})
+
 
 class AssignmentPollViewSet(UpdateModelMixin, DestroyModelMixin, GenericViewSet):
     """
diff --git a/openslides/motions/serializers.py b/openslides/motions/serializers.py
index e5ff3ccd5..b78194004 100644
--- a/openslides/motions/serializers.py
+++ b/openslides/motions/serializers.py
@@ -1,12 +1,15 @@
+from django.contrib.contenttypes.models import ContentType
 from django.db import transaction
 from django.utils.translation import ugettext as _
 
+from openslides.agenda.models import Item
 from openslides.config.api import config
 from openslides.utils.rest_api import (
     CharField,
     IntegerField,
     ModelSerializer,
     PrimaryKeyRelatedField,
+    SerializerMethodField,
     ValidationError,
 )
 
@@ -138,6 +141,7 @@ class MotionSerializer(ModelSerializer):
     Serializer for motion.models.Motion objects.
     """
     active_version = PrimaryKeyRelatedField(read_only=True)
+    agenda_items = SerializerMethodField()
     log_messages = MotionLogSerializer(many=True, read_only=True)
     polls = MotionPollSerializer(many=True, read_only=True)
     reason = CharField(allow_blank=True, required=False, write_only=True)
@@ -165,6 +169,7 @@ class MotionSerializer(ModelSerializer):
             'workflow',
             'tags',
             'attachments',
+            'agenda_items',
             'polls',
             'log_messages',)
         read_only_fields = ('parent',)  # Some other fields are also read_only. See definitions above.
@@ -228,3 +233,11 @@ class MotionSerializer(ModelSerializer):
                 attr.add(*validated_data[key])
 
         return motion
+
+    def get_agenda_items(self, obj):
+        """
+        Returns a list of ids of all agenda items that are related to this
+        motion.
+        """
+        motion_content_type = ContentType.objects.get_for_model(obj)
+        return (item.pk for item in Item.objects.filter(content_type=motion_content_type, object_id=obj.pk))
diff --git a/openslides/motions/views.py b/openslides/motions/views.py
index 8c8e06128..22406fdad 100644
--- a/openslides/motions/views.py
+++ b/openslides/motions/views.py
@@ -6,6 +6,7 @@ from django.utils.translation import ugettext_noop
 from reportlab.platypus import SimpleDocTemplate
 from rest_framework import status
 
+from openslides.agenda.models import Item
 from openslides.config.api import config
 from openslides.utils.rest_api import (
     ModelViewSet,
@@ -244,6 +245,28 @@ class MotionViewSet(ModelViewSet):
             person=request.user)
         return Response({'detail': message})
 
+    @detail_route(methods=['post'])
+    def create_agenda_item(self, request, pk=None):
+        """
+        Speacial view endpoint to create an agenda item that is related to
+        this motion.
+        """
+        # Check permission.
+        if not request.user.has_perm('motions.can_manage'):
+            self.permission_denied(request)
+
+        # Retrieve motion.
+        motion = self.get_object()
+
+        # Create agenda item.
+        Item.objects.create(content_object=motion)
+
+        # Write the log message and initiate response.
+        motion.write_log(
+            message_list=[ugettext_noop('Agenda item created')],
+            person=request.user)
+        return Response({'detail': _('Agenda item successfully created.')})
+
 
 class PollPDFView(PDFView):
     """