diff --git a/CHANGELOG b/CHANGELOG
index 3d6319273..a350f4488 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -12,6 +12,7 @@ Agenda:
 - Fixed wrong sorting of last speakers [#3193].
 - Fixed issue when sorting a new inserted speaker [#3210].
 - New permission for managing lists of speakers [#3366].
+- Fixed multiple request on creation of agenda related items [#3341].
 
 Motions:
 - New export dialog [#3185].
diff --git a/openslides/agenda/signals.py b/openslides/agenda/signals.py
index 7fff95ea7..f9a8187fc 100644
--- a/openslides/agenda/signals.py
+++ b/openslides/agenda/signals.py
@@ -14,16 +14,24 @@ def listen_to_related_object_post_save(sender, instance, created, **kwargs):
     Receiver function to create agenda items. It is connected to the signal
     django.db.models.signals.post_save during app loading.
 
-    Do not run caching and autoupdate if the instance as an attribute
-    skip_autoupdate (regardless of its truthy or falsy conent).
+    The agenda_item_update_information container may have fields like type,
+    parent_id, comment, duration, weight or skip_autoupdate.
+
+    Do not run caching and autoupdate if the instance has a key
+    skip_autoupdate in the agenda_item_update_information container.
     """
     if hasattr(instance, 'get_agenda_title'):
         if created:
+            attrs = {}
+            for attr in ('type', 'parent_id', 'comment', 'duration', 'weight'):
+                if instance.agenda_item_update_information.get(attr):
+                    attrs[attr] = instance.agenda_item_update_information.get(attr)
+            Item.objects.create(content_object=instance, **attrs)
+
             # If the object is created, the related_object has to be sent again.
-            Item.objects.create(content_object=instance)
-            if not hasattr(instance, 'skip_autoupdate'):
+            if not instance.agenda_item_update_information.get('skip_autoupdate'):
                 inform_changed_data(instance)
-        elif not hasattr(instance, 'skip_autoupdate'):
+        elif not instance.agenda_item_update_information.get('skip_autoupdate'):
             # If the object has changed, then also the agenda item has to be sent.
             inform_changed_data(instance.agenda_item)
 
diff --git a/openslides/agenda/static/js/agenda/base.js b/openslides/agenda/static/js/agenda/base.js
index 8709164d7..fa296f8be 100644
--- a/openslides/agenda/static/js/agenda/base.js
+++ b/openslides/agenda/static/js/agenda/base.js
@@ -21,32 +21,6 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
     }
 ])
 
-.factory('AgendaUpdate',[
-    'Agenda',
-    'operator',
-    function(Agenda, operator) {
-        return {
-            saveChanges: function (item_id, changes) {
-                // change agenda item only if user has the permission to do that
-                if (operator.hasPerms('agenda.can_manage agenda.can_see_hidden_items')) {
-                    Agenda.find(item_id).then(function (item) {
-                        var something = false;
-                        _.each(changes, function(change) {
-                            if (change.value !== item[change.key]) {
-                                item[change.key] = change.value;
-                                something = true;
-                            }
-                        });
-                        if (something === true) {
-                            Agenda.save(item);
-                        }
-                    });
-                }
-            }
-        };
-    }
-])
-
 .factory('Agenda', [
     '$http',
     'DS',
diff --git a/openslides/assignments/models.py b/openslides/assignments/models.py
index ede9fe5d8..3c5ea7396 100644
--- a/openslides/assignments/models.py
+++ b/openslides/assignments/models.py
@@ -330,6 +330,11 @@ class Assignment(RESTModelMixin, models.Model):
                 vote_results_dict[candidate].append(votes)
         return vote_results_dict
 
+    """
+    Container for runtime information for agenda app (on create or update of this instance).
+    """
+    agenda_item_update_information = {}  # type: Dict[str, Any]
+
     def get_agenda_title(self):
         return str(self)
 
diff --git a/openslides/assignments/serializers.py b/openslides/assignments/serializers.py
index 9feac5635..218513679 100644
--- a/openslides/assignments/serializers.py
+++ b/openslides/assignments/serializers.py
@@ -194,6 +194,8 @@ class AssignmentFullSerializer(ModelSerializer):
     """
     assignment_related_users = AssignmentRelatedUserSerializer(many=True, read_only=True)
     polls = AssignmentAllPollSerializer(many=True, read_only=True)
+    agenda_type = IntegerField(write_only=True, required=False, min_value=1, max_value=2)
+    agenda_parent_id = IntegerField(write_only=True, required=False, min_value=1)
 
     class Meta:
         model = Assignment
@@ -207,6 +209,8 @@ class AssignmentFullSerializer(ModelSerializer):
             'poll_description_default',
             'polls',
             'agenda_item_id',
+            'agenda_type',
+            'agenda_parent_id',
             'tags',)
         validators = (posts_validator,)
 
@@ -215,6 +219,19 @@ class AssignmentFullSerializer(ModelSerializer):
             data['description'] = validate_html(data['description'])
         return data
 
+    def create(self, validated_data):
+        """
+        Customized create method. Set information about related agenda item
+        into agenda_item_update_information container.
+        """
+        agenda_type = validated_data.pop('agenda_type', None)
+        agenda_parent_id = validated_data.pop('agenda_parent_id', None)
+        assignment = Assignment(**validated_data)
+        assignment.agenda_item_update_information['type'] = agenda_type
+        assignment.agenda_item_update_information['parent_id'] = agenda_parent_id
+        assignment.save()
+        return assignment
+
 
 class AssignmentShortSerializer(AssignmentFullSerializer):
     """
diff --git a/openslides/assignments/static/js/assignments/site.js b/openslides/assignments/static/js/assignments/site.js
index 71a870f5e..ecd053ba8 100644
--- a/openslides/assignments/static/js/assignments/site.js
+++ b/openslides/assignments/static/js/assignments/site.js
@@ -155,21 +155,21 @@ angular.module('OpenSlidesApp.assignments.site', [
                     templateOptions: {
                         label: gettextCatalog.getString('Default comment on the ballot paper')
                     }
-                },
-                {
-                    key: 'showAsAgendaItem',
-                    type: 'checkbox',
-                    templateOptions: {
-                        label: gettextCatalog.getString('Show as agenda item'),
-                        description: gettextCatalog.getString('If deactivated the election appears as internal item on agenda.')
-                    },
-                    hide: !(operator.hasPerms('assignments.can_manage') && operator.hasPerms('agenda.can_manage'))
                 }];
 
-                // parent item
+                // show as agenda item + parent item
                 if (isCreateForm) {
                     formFields.push({
-                        key: 'agenda_parent_item_id',
+                        key: 'showAsAgendaItem',
+                        type: 'checkbox',
+                        templateOptions: {
+                            label: gettextCatalog.getString('Show as agenda item'),
+                            description: gettextCatalog.getString('If deactivated the election appears as internal item on agenda.')
+                        },
+                        hide: !(operator.hasPerms('assignments.can_manage') && operator.hasPerms('agenda.can_manage'))
+                    });
+                    formFields.push({
+                        key: 'agenda_parent_id',
                         type: 'select-single',
                         templateOptions: {
                             label: gettextCatalog.getString('Parent item'),
@@ -627,9 +627,8 @@ angular.module('OpenSlidesApp.assignments.site', [
     'Assignment',
     'AssignmentForm',
     'Agenda',
-    'AgendaUpdate',
     'ErrorMessage',
-    function($scope, $state, Assignment, AssignmentForm, Agenda, AgendaUpdate, ErrorMessage) {
+    function($scope, $state, Assignment, AssignmentForm, Agenda, ErrorMessage) {
         $scope.model = {};
         // set default value for open posts form field
         $scope.model.open_posts = 1;
@@ -637,13 +636,10 @@ angular.module('OpenSlidesApp.assignments.site', [
         $scope.formFields = AssignmentForm.getFormFields(true);
         // save assignment
         $scope.save = function(assignment, gotoDetailView) {
+            assignment.agenda_type = assignment.showAsAgendaItem ? 1 : 2;
+            // The attribute assignment.agenda_parent_id is set by the form, see form definition.
             Assignment.create(assignment).then(
                 function (success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (assignment.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: assignment.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id,changes);
                     if (gotoDetailView) {
                         $state.go('assignments.assignment.detail', {id: success.id});
                     }
@@ -663,10 +659,9 @@ angular.module('OpenSlidesApp.assignments.site', [
     'Assignment',
     'AssignmentForm',
     'Agenda',
-    'AgendaUpdate',
     'assignmentId',
     'ErrorMessage',
-    function($scope, $state, Assignment, AssignmentForm, Agenda, AgendaUpdate, assignmentId, ErrorMessage) {
+    function($scope, $state, Assignment, AssignmentForm, Agenda, assignmentId, ErrorMessage) {
         var assignment = Assignment.get(assignmentId);
         $scope.alert = {};
         // set initial values for form model by create deep copy of assignment object
@@ -674,26 +669,14 @@ angular.module('OpenSlidesApp.assignments.site', [
         $scope.model = angular.copy(assignment);
         // get all form fields
         $scope.formFields = AssignmentForm.getFormFields();
-        var agenda_item = Agenda.get(assignment.agenda_item_id);
-        for (var i = 0; i < $scope.formFields.length; i++) {
-            if ($scope.formFields[i].key == "showAsAgendaItem") {
-                // get state from agenda item (hidden/internal or agenda item)
-                $scope.formFields[i].defaultValue = !assignment.agenda_item.is_hidden;
-            } else if($scope.formFields[i].key == 'agenda_parent_item_id') {
-                $scope.formFields[i].defaultValue = agenda_item.parent_id;
-            }
-        }
 
         // save assignment
         $scope.save = function (assignment, gotoDetailView) {
             // inject the changed assignment (copy) object back into DS store
             Assignment.inject(assignment);
-            // save change assignment object on server
+            // save changed assignment object on server
             Assignment.save(assignment).then(
                 function(success) {
-                    var changes = [{key: 'type', value: (assignment.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: assignment.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id,changes);
                     if (gotoDetailView) {
                         $state.go('assignments.assignment.detail', {id: success.id});
                     }
diff --git a/openslides/motions/models.py b/openslides/motions/models.py
index 7f792ea36..e550e5975 100644
--- a/openslides/motions/models.py
+++ b/openslides/motions/models.py
@@ -1,3 +1,5 @@
+from typing import Any, Dict  # noqa
+
 from django.conf import settings
 from django.contrib.contenttypes.fields import GenericRelation
 from django.core.exceptions import ImproperlyConfigured, ValidationError
@@ -628,6 +630,11 @@ class Motion(RESTModelMixin, models.Model):
         if self.recommendation is not None:
             self.set_state(self.recommendation)
 
+    """
+    Container for runtime information for agenda app (on create or update of this instance).
+    """
+    agenda_item_update_information = {}  # type: Dict[str, Any]
+
     def get_agenda_title(self):
         """
         Return a simple title string for the agenda.
@@ -895,6 +902,11 @@ class MotionBlock(RESTModelMixin, models.Model):
             id=self.pk)
         return super().delete(skip_autoupdate=skip_autoupdate, *args, **kwargs)  # type: ignore
 
+    """
+    Container for runtime information for agenda app (on create or update of this instance).
+    """
+    agenda_item_update_information = {}  # type: Dict[str, Any]
+
     @property
     def agenda_item(self):
         """
diff --git a/openslides/motions/serializers.py b/openslides/motions/serializers.py
index e5d7bcc2d..5fe55f434 100644
--- a/openslides/motions/serializers.py
+++ b/openslides/motions/serializers.py
@@ -49,9 +49,25 @@ class MotionBlockSerializer(ModelSerializer):
     """
     Serializer for motion.models.Category objects.
     """
+    agenda_type = IntegerField(write_only=True, required=False, min_value=1, max_value=2)
+    agenda_parent_id = IntegerField(write_only=True, required=False, min_value=1)
+
     class Meta:
         model = MotionBlock
-        fields = ('id', 'title', 'agenda_item_id',)
+        fields = ('id', 'title', 'agenda_item_id', 'agenda_type', 'agenda_parent_id',)
+
+    def create(self, validated_data):
+        """
+        Customized create method. Set information about related agenda item
+        into agenda_item_update_information container.
+        """
+        agenda_type = validated_data.pop('agenda_type', None)
+        agenda_parent_id = validated_data.pop('agenda_parent_id', None)
+        motion_block = MotionBlock(**validated_data)
+        motion_block.agenda_item_update_information['type'] = agenda_type
+        motion_block.agenda_item_update_information['parent_id'] = agenda_parent_id
+        motion_block.save()
+        return motion_block
 
 
 class StateSerializer(ModelSerializer):
@@ -288,6 +304,8 @@ class MotionSerializer(ModelSerializer):
         required=False,
         validators=[validate_workflow_field],
         write_only=True)
+    agenda_type = IntegerField(write_only=True, required=False, min_value=1, max_value=2)
+    agenda_parent_id = IntegerField(write_only=True, required=False, min_value=1)
 
     class Meta:
         model = Motion
@@ -314,6 +332,8 @@ class MotionSerializer(ModelSerializer):
             'attachments',
             'polls',
             'agenda_item_id',
+            'agenda_type',
+            'agenda_parent_id',
             'log_messages',)
         read_only_fields = ('state', 'recommendation',)  # Some other fields are also read_only. See definitions above.
 
@@ -332,6 +352,9 @@ class MotionSerializer(ModelSerializer):
     def create(self, validated_data):
         """
         Customized method to create a new motion from some data.
+
+        Set also information about related agenda item into
+        agenda_item_update_information container.
         """
         motion = Motion()
         motion.title = validated_data['title']
@@ -344,6 +367,8 @@ class MotionSerializer(ModelSerializer):
         motion.comments = validated_data.get('comments')
         motion.parent = validated_data.get('parent')
         motion.reset_state(validated_data.get('workflow_id'))
+        motion.agenda_item_update_information['type'] = validated_data.get('agenda_type')
+        motion.agenda_item_update_information['parent_id'] = validated_data.get('agenda_parent_id')
         motion.save()
         if validated_data.get('submitters'):
             motion.submitters.add(*validated_data['submitters'])
diff --git a/openslides/motions/static/js/motions/motion-block.js b/openslides/motions/static/js/motions/motion-block.js
index b871ecc20..2a00aadc6 100644
--- a/openslides/motions/static/js/motions/motion-block.js
+++ b/openslides/motions/static/js/motions/motion-block.js
@@ -69,8 +69,8 @@ angular.module('OpenSlidesApp.motions.motionBlock', [])
                 };
             },
             // Get angular-formly fields.
-            getFormFields: function () {
-                return [
+            getFormFields: function (isCreateForm) {
+                var formFields = [
                     {
                         key: 'title',
                         type: 'input',
@@ -78,7 +78,11 @@ angular.module('OpenSlidesApp.motions.motionBlock', [])
                             label: gettextCatalog.getString('Title')
                         }
                     },
-                    {
+                ];
+
+                // show as agenda item + parent item
+                if (isCreateForm) {
+                    formFields.push({
                         key: 'showAsAgendaItem',
                         type: 'checkbox',
                         templateOptions: {
@@ -86,18 +90,21 @@ angular.module('OpenSlidesApp.motions.motionBlock', [])
                             description: gettextCatalog.getString('If deactivated it appears as internal item on agenda.')
                         },
                         hide: !(operator.hasPerms('motions.can_manage') && operator.hasPerms('agenda.can_manage'))
-                    },
-                    {
-                        key: 'agenda_parent_item_id',
+                    });
+                    formFields.push({
+                        key: 'agenda_parent_id',
                         type: 'select-single',
                         templateOptions: {
                             label: gettextCatalog.getString('Parent item'),
                             options: AgendaTree.getFlatTree(Agenda.getAll()),
                             ngOptions: 'item.id as item.getListViewTitle() for item in to.options | notself : model.agenda_item_id',
                             placeholder: gettextCatalog.getString('Select a parent item ...')
-                        }
-                    }
-                ];
+                        },
+                        hide: !operator.hasPerms('agenda.can_manage')
+                    });
+                }
+
+                return formFields;
             }
         };
     }
@@ -190,24 +197,20 @@ angular.module('OpenSlidesApp.motions.motionBlock', [])
     '$scope',
     'MotionBlock',
     'MotionBlockForm',
-    'AgendaUpdate',
-    function($scope, MotionBlock, MotionBlockForm, AgendaUpdate) {
+    function($scope, MotionBlock, MotionBlockForm) {
         // Prepare form.
         $scope.model = {};
         $scope.model.showAsAgendaItem = true;
 
         // Get all form fields.
-        $scope.formFields = MotionBlockForm.getFormFields();
+        $scope.formFields = MotionBlockForm.getFormFields(true);
 
         // Save form.
         $scope.save = function (motionBlock) {
+            motionBlock.agenda_type = motionBlock.showAsAgendaItem ? 1 : 2;
+            // The attribute motionBlock.agenda_parent_id is set by the form, see form definition.
             MotionBlock.create(motionBlock).then(
                 function (success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (motionBlock.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: motionBlock.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id, changes);
                     $scope.closeThisDialog();
                 },
                 function (error) {
@@ -227,11 +230,8 @@ angular.module('OpenSlidesApp.motions.motionBlock', [])
     '$state',
     'MotionBlock',
     'MotionBlockForm',
-    'AgendaUpdate',
     'motionBlockId',
-    function($scope, $state, MotionBlock, MotionBlockForm, AgendaUpdate, motionBlockId) {
-        // TODO: Check #2486 and remove some agenda related code.
-        //MotionBlock.loadRelations(motionBlock, 'agenda_item');
+    function($scope, $state, MotionBlock, MotionBlockForm, motionBlockId) {
         $scope.alert = {};
 
         // Prepare form. Set initial values by creating a deep copy of
@@ -241,23 +241,14 @@ angular.module('OpenSlidesApp.motions.motionBlock', [])
 
         // Get all form fields.
         $scope.formFields = MotionBlockForm.getFormFields();
-        for (var i = 0; i < $scope.formFields.length; i++) {
-            if ($scope.formFields[i].key == 'showAsAgendaItem') {
-                // Get state from agenda item (hidden/internal or agenda item).
-                $scope.formFields[i].defaultValue = !motionBlock.agenda_item.is_hidden;
-            } else if ($scope.formFields[i].key == 'agenda_parent_item_id') {
-                $scope.formFields[i].defaultValue = motionBlock.agenda_item.parent_id;
-            }
-        }
+
         // Save form.
         $scope.save = function (motionBlock) {
+            // inject the changed motionBlock (copy) object back into DS store
+            MotionBlock.inject(motionBlock);
+            // save changed motionBlock object on server
             MotionBlock.create(motionBlock).then(
                 function (success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (motionBlock.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: motionBlock.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id,changes);
                     $scope.closeThisDialog();
                 },
                 function (error) {
diff --git a/openslides/motions/static/js/motions/site.js b/openslides/motions/static/js/motions/site.js
index b06ae5421..547999e97 100644
--- a/openslides/motions/static/js/motions/site.js
+++ b/openslides/motions/static/js/motions/site.js
@@ -376,21 +376,21 @@ angular.module('OpenSlidesApp.motions.site', [
                         description: gettextCatalog.getString("Don't create a new version.")
                     },
                     hide: true
-                },
-                {
-                    key: 'showAsAgendaItem',
-                    type: 'checkbox',
-                    templateOptions: {
-                        label: gettextCatalog.getString('Show as agenda item'),
-                        description: gettextCatalog.getString('If deactivated the motion appears as internal item on agenda.')
-                    },
-                    hide: !(operator.hasPerms('motions.can_manage') && operator.hasPerms('agenda.can_manage'))
                 }];
 
-                // parent item
+                // show as agenda item + parent item
                 if (isCreateForm) {
                     formFields.push({
-                        key: 'agenda_parent_item_id',
+                        key: 'showAsAgendaItem',
+                        type: 'checkbox',
+                        templateOptions: {
+                            label: gettextCatalog.getString('Show as agenda item'),
+                            description: gettextCatalog.getString('If deactivated the motion appears as internal item on agenda.')
+                        },
+                        hide: !(operator.hasPerms('motions.can_manage') && operator.hasPerms('agenda.can_manage'))
+                    });
+                    formFields.push({
+                        key: 'agenda_parent_id',
                         type: 'select-single',
                         templateOptions: {
                             label: gettextCatalog.getString('Parent item'),
@@ -1890,10 +1890,9 @@ angular.module('OpenSlidesApp.motions.site', [
     'User',
     'Workflow',
     'Agenda',
-    'AgendaUpdate',
     'ErrorMessage',
     function($scope, $state, gettext, gettextCatalog, operator, Motion, MotionForm,
-        Category, Config, Mediafile, Tag, User, Workflow, Agenda, AgendaUpdate, ErrorMessage) {
+        Category, Config, Mediafile, Tag, User, Workflow, Agenda, ErrorMessage) {
         Category.bindAll({}, $scope, 'categories');
         Mediafile.bindAll({}, $scope, 'mediafiles');
         Tag.bindAll({}, $scope, 'tags');
@@ -1927,13 +1926,10 @@ angular.module('OpenSlidesApp.motions.site', [
 
         // save motion
         $scope.save = function (motion, gotoDetailView) {
+            motion.agenda_type = motion.showAsAgendaItem ? 1 : 2;
+            // The attribute motion.agenda_parent_id is set by the form, see form definition.
             Motion.create(motion).then(
                 function(success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (motion.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: motion.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id, changes);
                     if (isAmendment || gotoDetailView) {
                         $state.go('motions.motion.detail', {id: success.id});
                     }
@@ -1959,13 +1955,12 @@ angular.module('OpenSlidesApp.motions.site', [
     'User',
     'Workflow',
     'Agenda',
-    'AgendaUpdate',
     'motionId',
     'operator',
     'ErrorMessage',
     'EditingWarning',
     function($scope, $state, Motion, Category, Config, Mediafile, MotionForm,
-        Tag, User, Workflow, Agenda, AgendaUpdate, motionId, operator, ErrorMessage,
+        Tag, User, Workflow, Agenda, motionId, operator, ErrorMessage,
         EditingWarning) {
         Category.bindAll({}, $scope, 'categories');
         Mediafile.bindAll({}, $scope, 'mediafiles');
@@ -2007,18 +2002,10 @@ angular.module('OpenSlidesApp.motions.site', [
                     $scope.formFields[i].hide = false;
                 }
             }
-            if ($scope.formFields[i].key == "showAsAgendaItem" && motion.agenda_item) {
-                // get state from agenda item (hidden/internal or agenda item)
-                $scope.formFields[i].defaultValue = !motion.agenda_item.is_hidden;
-            }
             if ($scope.formFields[i].key == "workflow_id") {
                // get saved workflow id from state
                $scope.formFields[i].defaultValue = motion.state.workflow_id;
             }
-            if ($scope.formFields[i].key == "agenda_parent_item_id") {
-                // get current parent_id of the agenda item
-                $scope.formFields[i].defaultValue = motion.agenda_item.parent_id;
-            }
         }
 
         // Displaying a warning, if other users edit this motion too
@@ -2029,14 +2016,9 @@ angular.module('OpenSlidesApp.motions.site', [
         $scope.save = function (motion, gotoDetailView) {
             // inject the changed motion (copy) object back into DS store
             Motion.inject(motion);
-            // save change motion object on server
+            // save changed motion object on server
             Motion.save(motion).then(
                 function(success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (motion.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: motion.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id,changes);
                     if (gotoDetailView) {
                         $state.go('motions.motion.detail', {id: success.id});
                     }
diff --git a/openslides/motions/views.py b/openslides/motions/views.py
index cc4679c79..304bf304b 100644
--- a/openslides/motions/views.py
+++ b/openslides/motions/views.py
@@ -596,7 +596,8 @@ class CategoryViewSet(ModelViewSet):
                 # Remove old identifiers
                 for motion in motions:
                     motion.identifier = None
-                    motion.skip_autoupdate = True  # This line is to skip agenda item autoupdate. See agenda/signals.py.
+                    # This line is to skip agenda item autoupdate. See agenda/signals.py.
+                    motion.agenda_item_update_information['skip_autoupdate'] = True
                     motion.save(skip_autoupdate=True)
 
                 # Set new identifers and change identifiers of amendments.
@@ -615,7 +616,8 @@ class CategoryViewSet(ModelViewSet):
                                 obj['new_identifier'],
                                 child.identifier,
                                 count=1)
-                            child.skip_autoupdate = True  # This line is to skip agenda item autoupdate. See agenda/signals.py.
+                            # This line is to skip agenda item autoupdate. See agenda/signals.py.
+                            child.agenda_item_update_information['skip_autoupdate'] = True
                             child.save(skip_autoupdate=True)
                             instances.append(child)
                             instances.append(child.agenda_item)
diff --git a/openslides/topics/models.py b/openslides/topics/models.py
index e31478c7d..1f869304a 100644
--- a/openslides/topics/models.py
+++ b/openslides/topics/models.py
@@ -1,3 +1,5 @@
+from typing import Any, Dict  # noqa
+
 from django.contrib.contenttypes.fields import GenericRelation
 from django.db import models
 
@@ -54,6 +56,11 @@ class Topic(RESTModelMixin, models.Model):
             id=self.pk)
         return super().delete(skip_autoupdate=skip_autoupdate, *args, **kwargs)  # type: ignore
 
+    """
+    Container for runtime information for agenda app (on create or update of this instance).
+    """
+    agenda_item_update_information = {}  # type: Dict[str, Any]
+
     @property
     def agenda_item(self):
         """
diff --git a/openslides/topics/serializers.py b/openslides/topics/serializers.py
index d58ac369a..7529ee80e 100644
--- a/openslides/topics/serializers.py
+++ b/openslides/topics/serializers.py
@@ -1,4 +1,4 @@
-from openslides.utils.rest_api import ModelSerializer
+from openslides.utils.rest_api import CharField, IntegerField, ModelSerializer
 from openslides.utils.validate import validate_html
 
 from .models import Topic
@@ -8,11 +8,49 @@ class TopicSerializer(ModelSerializer):
     """
     Serializer for core.models.Topic objects.
     """
+    agenda_type = IntegerField(write_only=True, required=False, min_value=1, max_value=2)
+    agenda_parent_id = IntegerField(write_only=True, required=False, min_value=1)
+    agenda_comment = CharField(write_only=True, required=False, allow_blank=True)
+    agenda_duration = IntegerField(write_only=True, required=False, min_value=1)
+    agenda_weight = IntegerField(write_only=True, required=False, min_value=1)
+
     class Meta:
         model = Topic
-        fields = ('id', 'title', 'text', 'attachments', 'agenda_item_id')
+        fields = (
+            'id',
+            'title',
+            'text',
+            'attachments',
+            'agenda_item_id',
+            'agenda_type',
+            'agenda_parent_id',
+            'agenda_comment',
+            'agenda_duration',
+            'agenda_weight',
+        )
 
     def validate(self, data):
         if 'text' in data:
             data['text'] = validate_html(data['text'])
         return data
+
+    def create(self, validated_data):
+        """
+        Customized create method. Set information about related agenda item
+        into agenda_item_update_information container.
+        """
+        agenda_type = validated_data.pop('agenda_type', None)
+        agenda_parent_id = validated_data.pop('agenda_parent_id', None)
+        agenda_comment = validated_data.pop('agenda_comment', None)
+        agenda_duration = validated_data.pop('agenda_duration', None)
+        agenda_weight = validated_data.pop('agenda_weight', None)
+        attachments = validated_data.pop('attachments', [])
+        topic = Topic(**validated_data)
+        topic.agenda_item_update_information['type'] = agenda_type
+        topic.agenda_item_update_information['parent_id'] = agenda_parent_id
+        topic.agenda_item_update_information['comment'] = agenda_comment
+        topic.agenda_item_update_information['duration'] = agenda_duration
+        topic.agenda_item_update_information['weight'] = agenda_weight
+        topic.save()
+        topic.attachments.add(*attachments)
+        return topic
diff --git a/openslides/topics/static/js/topics/site.js b/openslides/topics/static/js/topics/site.js
index 6bb13ba94..4be30afef 100644
--- a/openslides/topics/static/js/topics/site.js
+++ b/openslides/topics/static/js/topics/site.js
@@ -116,28 +116,28 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
                         }
                     });
                 }
-                // show as agenda item
-                formFields.push({
-                    key: 'showAsAgendaItem',
-                    type: 'checkbox',
-                    templateOptions: {
-                        label: gettextCatalog.getString('Show as agenda item'),
-                        description: gettextCatalog.getString('If deactivated it appears as internal item on agenda.')
-                    },
-                    hide: !operator.hasPerms('agenda.can_manage')
-                });
 
-                // parent item
+                // show as agenda item + parent item
                 if (isCreateForm) {
                     formFields.push({
-                        key: 'agenda_parent_item_id',
+                        key: 'showAsAgendaItem',
+                        type: 'checkbox',
+                        templateOptions: {
+                            label: gettextCatalog.getString('Show as agenda item'),
+                            description: gettextCatalog.getString('If deactivated it appears as internal item on agenda.')
+                        },
+                        hide: !operator.hasPerms('agenda.can_manage')
+                    });
+                    formFields.push({
+                        key: 'agenda_parent_id',
                         type: 'select-single',
                         templateOptions: {
                             label: gettextCatalog.getString('Parent item'),
                             options: AgendaTree.getFlatTree(Agenda.getAll()),
                             ngOptions: 'item.id as item.getListViewTitle() for item in to.options | notself : model.agenda_item_id',
                             placeholder: gettextCatalog.getString('Select a parent item ...')
-                        }
+                        },
+                        hide: !operator.hasPerms('agenda.can_manage')
                     });
                 }
 
@@ -186,9 +186,8 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
     'Topic',
     'TopicForm',
     'Agenda',
-    'AgendaUpdate',
     'ErrorMessage',
-    function($scope, $state, Topic, TopicForm, Agenda, AgendaUpdate, ErrorMessage) {
+    function($scope, $state, Topic, TopicForm, Agenda, ErrorMessage) {
         $scope.topic = {};
         $scope.model = {};
         $scope.model.showAsAgendaItem = true;
@@ -196,13 +195,10 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
         $scope.formFields = TopicForm.getFormFields(true);
         // save form
         $scope.save = function (topic) {
+            topic.agenda_type = topic.showAsAgendaItem ? 1 : 2;
+            // The attribute topic.agenda_parent_id is set by the form, see form definition.
             Topic.create(topic).then(
                 function (success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (topic.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: topic.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id,changes);
                     $scope.closeThisDialog();
                 }, function (error) {
                     $scope.alert = ErrorMessage.forAlert(error);
@@ -218,10 +214,9 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
     'Topic',
     'TopicForm',
     'Agenda',
-    'AgendaUpdate',
     'topicId',
     'ErrorMessage',
-    function($scope, $state, Topic, TopicForm, Agenda, AgendaUpdate, topicId, ErrorMessage) {
+    function($scope, $state, Topic, TopicForm, Agenda, topicId, ErrorMessage) {
         var topic = Topic.get(topicId);
         $scope.alert = {};
         // set initial values for form model by create deep copy of topic object
@@ -229,25 +224,17 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
         $scope.model = angular.copy(topic);
         // get all form fields
         $scope.formFields = TopicForm.getFormFields();
-        for (var i = 0; i < $scope.formFields.length; i++) {
-            if ($scope.formFields[i].key == "showAsAgendaItem") {
-                // get state from agenda item (hidden/internal or agenda item)
-                $scope.formFields[i].defaultValue = !topic.agenda_item.is_hidden;
-            } else if ($scope.formFields[i].key == "agenda_parent_item_id") {
-                $scope.formFields[i].defaultValue = topic.agenda_item.parent_id;
-            }
-        }
+
         // save form
         $scope.save = function (topic) {
-            Topic.create(topic).then(
+            // inject the changed topic (copy) object back into DS store
+            Topic.inject(topic);
+            // save changed topic object on server
+            Topic.save(topic).then(
                 function(success) {
-                    // type: Value 1 means a non hidden agenda item, value 2 means a hidden agenda item,
-                    // see openslides.agenda.models.Item.ITEM_TYPE.
-                    var changes = [{key: 'type', value: (topic.showAsAgendaItem ? 1 : 2)},
-                                   {key: 'parent_id', value: topic.agenda_parent_item_id}];
-                    AgendaUpdate.saveChanges(success.agenda_item_id,changes);
                     $scope.closeThisDialog();
-                }, function (error) {
+                },
+                function (error) {
                     // save error: revert all changes by restore
                     // (refresh) original topic object from server
                     Topic.refresh(topic);
@@ -265,8 +252,7 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
     'Topic',
     'HumanTimeConverter',
     'TopicsCsvExample',
-    'AgendaUpdate',
-    function($scope, gettext, Agenda, Topic, HumanTimeConverter, TopicsCsvExample, AgendaUpdate) {
+    function($scope, gettext, Agenda, Topic, HumanTimeConverter, TopicsCsvExample) {
         // Big TODO: Change wording from "item" to "topic".
         // import from textarea
         $scope.importByLine = function () {
@@ -275,12 +261,11 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
                 $scope.importcounter = 0;
                 $scope.titleItems.forEach(function(title, index) {
                     var item = {title: title};
+                    item.agenda_type = 1;  // The new topic is not hidden.
+                    item.agenda_weight = 1000 + index;
                     // TODO: create all items in bulk mode
                     Topic.create(item).then(
                         function(success) {
-                            var changes = [{key: 'type', value: 1},
-                                           {key: 'weight', value: 1000 + index}];
-                            AgendaUpdate.saveChanges(success.agenda_item_id, changes);
                             $scope.importcounter++;
                         }
                     );
@@ -363,13 +348,12 @@ angular.module('OpenSlidesApp.topics.site', ['OpenSlidesApp.topics', 'OpenSlides
             $scope.csvImporting = true;
             angular.forEach($scope.items, function (item) {
                 if (item.selected && !item.importerror) {
+                    item.agenda_type = item.type;
+                    item.agenda_comment = item.comment;
+                    item.agenda_duration = item.duration;
+                    item.agenda_weight = item.weight;
                     Topic.create(item).then(
                         function(success) {
-                            var changes = [{key: 'duration', value: item.duration},
-                                           {key: 'comment', value: item.comment},
-                                           {key: 'type', value: item.type},
-                                           {key: 'weight', value: item.weight}];
-                            AgendaUpdate.saveChanges(success.agenda_item_id, changes);
                             item.imported = true;
                         }
                     );