diff --git a/CHANGELOG.md b/CHANGELOG.md
index 26e3bafcdd66..2c160fe3b2d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Issue loading openvino models for semi-automatic and automatic annotation (<https://github.com/opencv/cvat/pull/1996>)
 - Basic functions of CVAT works without activated nuclio dashboard
+- Fixed error with creating task with labels with the same name (<https://github.com/opencv/cvat/pull/2031>)
 
 ### Security
 -
diff --git a/cvat-ui/package-lock.json b/cvat-ui/package-lock.json
index 8def8aaa4709..1f47f08107da 100644
--- a/cvat-ui/package-lock.json
+++ b/cvat-ui/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.7.1",
+  "version": "1.7.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/cvat-ui/package.json b/cvat-ui/package.json
index f20e3eb6da67..f1a563ee4e8e 100644
--- a/cvat-ui/package.json
+++ b/cvat-ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.7.1",
+  "version": "1.7.2",
   "description": "CVAT single-page application",
   "main": "src/index.tsx",
   "scripts": {
diff --git a/cvat-ui/src/actions/tasks-actions.ts b/cvat-ui/src/actions/tasks-actions.ts
index 4097f0198e85..c61c12d756eb 100644
--- a/cvat-ui/src/actions/tasks-actions.ts
+++ b/cvat-ui/src/actions/tasks-actions.ts
@@ -344,10 +344,12 @@ function createTask(): AnyAction {
     return action;
 }
 
-function createTaskSuccess(): AnyAction {
+function createTaskSuccess(taskId: number): AnyAction {
     const action = {
         type: TasksActionTypes.CREATE_TASK_SUCCESS,
-        payload: {},
+        payload: {
+            taskId,
+        },
     };
 
     return action;
@@ -433,10 +435,10 @@ ThunkAction<Promise<void>, {}, {}, AnyAction> {
 
         dispatch(createTask());
         try {
-            await taskInstance.save((status: string): void => {
+            const savedTask = await taskInstance.save((status: string): void => {
                 dispatch(createTaskUpdateStatus(status));
             });
-            dispatch(createTaskSuccess());
+            dispatch(createTaskSuccess(savedTask.id));
         } catch (error) {
             dispatch(createTaskFailed(error));
         }
diff --git a/cvat-ui/src/components/create-task-page/create-task-content.tsx b/cvat-ui/src/components/create-task-page/create-task-content.tsx
index 7ee99a6a1e5e..18de3d7aa348 100644
--- a/cvat-ui/src/components/create-task-page/create-task-content.tsx
+++ b/cvat-ui/src/components/create-task-page/create-task-content.tsx
@@ -3,6 +3,8 @@
 // SPDX-License-Identifier: MIT
 
 import React from 'react';
+import { RouteComponentProps } from 'react-router';
+import { withRouter } from 'react-router-dom';
 import { Row, Col } from 'antd/lib/grid';
 import Alert from 'antd/lib/alert';
 import Button from 'antd/lib/button';
@@ -26,6 +28,7 @@ export interface CreateTaskData {
 interface Props {
     onCreate: (data: CreateTaskData) => void;
     status: string;
+    taskId: number | null;
     installedGit: boolean;
 }
 
@@ -48,22 +51,31 @@ const defaultState = {
     },
 };
 
-export default class CreateTaskContent extends React.PureComponent<Props, State> {
+class CreateTaskContent extends React.PureComponent<Props & RouteComponentProps, State> {
     private basicConfigurationComponent: any;
     private advancedConfigurationComponent: any;
     private fileManagerContainer: any;
 
-    public constructor(props: Props) {
+    public constructor(props: Props & RouteComponentProps) {
         super(props);
         this.state = { ...defaultState };
     }
 
     public componentDidUpdate(prevProps: Props): void {
-        const { status } = this.props;
+        const { status, history, taskId } = this.props;
 
         if (status === 'CREATED' && prevProps.status !== 'CREATED') {
+            const btn = (
+                <Button
+                    onClick={() => history.push(`/tasks/${taskId}`)}
+                >
+                    Open task
+                </Button>
+            );
+
             notification.info({
                 message: 'The task has been created',
+                btn,
             });
 
             this.basicConfigurationComponent.resetFields();
@@ -252,3 +264,5 @@ export default class CreateTaskContent extends React.PureComponent<Props, State>
         );
     }
 }
+
+export default withRouter(CreateTaskContent);
diff --git a/cvat-ui/src/components/create-task-page/create-task-page.tsx b/cvat-ui/src/components/create-task-page/create-task-page.tsx
index 15c5f18c47a6..39549ea68dd8 100644
--- a/cvat-ui/src/components/create-task-page/create-task-page.tsx
+++ b/cvat-ui/src/components/create-task-page/create-task-page.tsx
@@ -16,6 +16,7 @@ interface Props {
     onCreate: (data: CreateTaskData) => void;
     status: string;
     error: string;
+    taskId: number | null;
     installedGit: boolean;
 }
 
@@ -23,6 +24,7 @@ export default function CreateTaskPage(props: Props): JSX.Element {
     const {
         error,
         status,
+        taskId,
         onCreate,
         installedGit,
     } = props;
@@ -66,6 +68,7 @@ export default function CreateTaskPage(props: Props): JSX.Element {
             <Col md={20} lg={16} xl={14} xxl={9}>
                 <Text className='cvat-title'>Create a new task</Text>
                 <CreateTaskContent
+                    taskId={taskId}
                     status={status}
                     onCreate={onCreate}
                     installedGit={installedGit}
diff --git a/cvat-ui/src/components/header/header.tsx b/cvat-ui/src/components/header/header.tsx
index 5391fe8df24a..87db4c51296c 100644
--- a/cvat-ui/src/components/header/header.tsx
+++ b/cvat-ui/src/components/header/header.tsx
@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: MIT
 
 import './styles.scss';
-import React from 'react';
+import React, { MouseEvent } from 'react';
 import { RouteComponentProps } from 'react-router';
 import { withRouter } from 'react-router-dom';
 import { Row, Col } from 'antd/lib/grid';
@@ -174,8 +174,12 @@ function HeaderContainer(props: Props): JSX.Element {
                     className='cvat-header-button'
                     type='link'
                     value='tasks'
+                    href='/tasks?page=1'
                     onClick={
-                        (): void => props.history.push('/tasks?page=1')
+                        (event: React.MouseEvent): void => {
+                            event.preventDefault();
+                            props.history.push('/tasks?page=1');
+                        }
                     }
                 >
                     Tasks
@@ -184,8 +188,12 @@ function HeaderContainer(props: Props): JSX.Element {
                     className='cvat-header-button'
                     type='link'
                     value='models'
+                    href='/models'
                     onClick={
-                        (): void => props.history.push('/models')
+                        (event: React.MouseEvent): void => {
+                            event.preventDefault();
+                            props.history.push('/models');
+                        }
                     }
                 >
                     Models
@@ -195,8 +203,10 @@ function HeaderContainer(props: Props): JSX.Element {
                         <Button
                             className='cvat-header-button'
                             type='link'
+                            href={`${serverHost}/analytics/app/kibana`}
                             onClick={
-                                (): void => {
+                                (event: React.MouseEvent): void => {
+                                    event.preventDefault();
                                     // false positive
                                     // eslint-disable-next-line
                                     window.open(`${serverHost}/analytics/app/kibana`, '_blank');
@@ -211,8 +221,10 @@ function HeaderContainer(props: Props): JSX.Element {
                 <Button
                     className='cvat-header-button'
                     type='link'
+                    href={GITHUB_URL}
                     onClick={
-                        (): void => {
+                        (event: React.MouseEvent): void => {
+                            event.preventDefault();
                             // false positive
                             // eslint-disable-next-line security/detect-non-literal-fs-filename
                             window.open(GITHUB_URL, '_blank');
@@ -225,8 +237,10 @@ function HeaderContainer(props: Props): JSX.Element {
                 <Button
                     className='cvat-header-button'
                     type='link'
+                    href={`${serverHost}/documentation/user_guide.html`}
                     onClick={
-                        (): void => {
+                        (event: React.MouseEvent): void => {
+                            event.preventDefault();
                             // false positive
                             // eslint-disable-next-line
                             window.open(`${serverHost}/documentation/user_guide.html`, '_blank')
diff --git a/cvat-ui/src/components/labels-editor/constructor-creator.tsx b/cvat-ui/src/components/labels-editor/constructor-creator.tsx
index b5c8664dcc87..ff101b8af5fa 100644
--- a/cvat-ui/src/components/labels-editor/constructor-creator.tsx
+++ b/cvat-ui/src/components/labels-editor/constructor-creator.tsx
@@ -8,14 +8,30 @@ import LabelForm from './label-form';
 import { Label } from './common';
 
 interface Props {
+    labelNames: string[];
     onCreate: (label: Label | null) => void;
 }
 
-export default function ConstructorCreator(props: Props): JSX.Element {
-    const { onCreate } = props;
+function compareProps(prevProps: Props, nextProps: Props): boolean {
+    if (prevProps.onCreate !== nextProps.onCreate) {
+        return false;
+    }
+    if (!(prevProps.labelNames.length === nextProps.labelNames.length
+        && prevProps.labelNames.map((value, index) => value === nextProps.labelNames[index])
+            .reduce((prevValue, curValue) => prevValue && curValue, true)
+    )) {
+        return false;
+    }
+    return true;
+}
+
+function ConstructorCreator(props: Props): JSX.Element {
+    const { onCreate, labelNames } = props;
     return (
         <div className='cvat-label-constructor-creator'>
-            <LabelForm label={null} onSubmit={onCreate} />
+            <LabelForm label={null} onSubmit={onCreate} labelNames={labelNames} />
         </div>
     );
 }
+
+export default React.memo(ConstructorCreator, compareProps);
diff --git a/cvat-ui/src/components/labels-editor/label-form.tsx b/cvat-ui/src/components/labels-editor/label-form.tsx
index 469826a4f6c7..12c0a48973ab 100644
--- a/cvat-ui/src/components/labels-editor/label-form.tsx
+++ b/cvat-ui/src/components/labels-editor/label-form.tsx
@@ -32,6 +32,7 @@ export enum AttributeType {
 
 type Props = FormComponentProps & {
     label: Label | null;
+    labelNames?: string[];
     onSubmit: (label: Label | null) => void;
 };
 
@@ -384,6 +385,7 @@ class LabelForm extends React.PureComponent<Props, {}> {
         const {
             label,
             form,
+            labelNames,
         } = this.props;
         const value = label ? label.name : '';
         const locked = label ? label.id >= 0 : false;
@@ -399,6 +401,13 @@ class LabelForm extends React.PureComponent<Props, {}> {
                         }, {
                             pattern: patterns.validateAttributeName.pattern,
                             message: patterns.validateAttributeName.message,
+                        }, {
+                            validator:
+                                async (_rule: any, labelName: string, callback: Function) => {
+                                    if (labelNames && labelNames.includes(labelName)) {
+                                        callback('Label name must be unique for the task');
+                                    }
+                                },
                         }],
                     })(<Input disabled={locked} placeholder='Label name' />)}
                 </Form.Item>
diff --git a/cvat-ui/src/components/labels-editor/labels-editor.tsx b/cvat-ui/src/components/labels-editor/labels-editor.tsx
index 4ade51006e3d..89245b96b986 100644
--- a/cvat-ui/src/components/labels-editor/labels-editor.tsx
+++ b/cvat-ui/src/components/labels-editor/labels-editor.tsx
@@ -221,6 +221,7 @@ export default class LabelsEditor
     }
 
     public render(): JSX.Element {
+        const { labels } = this.props;
         const {
             savedLabels,
             unsavedLabels,
@@ -319,6 +320,7 @@ export default class LabelsEditor
                         constructorMode === ConstructorMode.CREATE
                             && (
                                 <ConstructorCreator
+                                    labelNames={labels.map((l) => l.name)}
                                     onCreate={this.handleCreate}
                                 />
                             )
diff --git a/cvat-ui/src/components/labels-editor/raw-viewer.tsx b/cvat-ui/src/components/labels-editor/raw-viewer.tsx
index eb798cd2e7ee..f7b95a08e0a6 100644
--- a/cvat-ui/src/components/labels-editor/raw-viewer.tsx
+++ b/cvat-ui/src/components/labels-editor/raw-viewer.tsx
@@ -28,6 +28,10 @@ class RawViewer extends React.PureComponent<Props> {
             if (!Array.isArray(parsed)) {
                 callback('Field is expected to be a JSON array');
             }
+            const labelNames = parsed.map((label: Label) => label.name);
+            if (new Set(labelNames).size !== labelNames.length) {
+                callback('Label names must be unique for the task');
+            }
 
             for (const label of parsed) {
                 try {
diff --git a/cvat-ui/src/containers/create-task-page/create-task-page.tsx b/cvat-ui/src/containers/create-task-page/create-task-page.tsx
index 09685de64530..472c86bb1a10 100644
--- a/cvat-ui/src/containers/create-task-page/create-task-page.tsx
+++ b/cvat-ui/src/containers/create-task-page/create-task-page.tsx
@@ -10,6 +10,7 @@ import { CreateTaskData } from 'components/create-task-page/create-task-content'
 import { createTaskAsync } from 'actions/tasks-actions';
 
 interface StateToProps {
+    taskId: number | null;
     status: string;
     error: string;
     installedGit: boolean;
diff --git a/cvat-ui/src/reducers/interfaces.ts b/cvat-ui/src/reducers/interfaces.ts
index 72feee69a65c..cd971cff264e 100644
--- a/cvat-ui/src/reducers/interfaces.ts
+++ b/cvat-ui/src/reducers/interfaces.ts
@@ -60,6 +60,7 @@ export interface TasksState {
             [tid: number]: boolean; // deleted (deleting if in dictionary)
         };
         creates: {
+            taskId: number | null;
             status: string;
             error: string;
         };
diff --git a/cvat-ui/src/reducers/tasks-reducer.ts b/cvat-ui/src/reducers/tasks-reducer.ts
index e255d7b95be5..27a67873ecad 100644
--- a/cvat-ui/src/reducers/tasks-reducer.ts
+++ b/cvat-ui/src/reducers/tasks-reducer.ts
@@ -31,6 +31,7 @@ const defaultState: TasksState = {
         loads: {},
         deletes: {},
         creates: {
+            taskId: null,
             status: '',
             error: '',
         },
@@ -238,6 +239,7 @@ export default (state: TasksState = defaultState, action: AnyAction): TasksState
                 activities: {
                     ...state.activities,
                     creates: {
+                        taskId: null,
                         status: '',
                         error: '',
                     },
@@ -259,12 +261,14 @@ export default (state: TasksState = defaultState, action: AnyAction): TasksState
             };
         }
         case TasksActionTypes.CREATE_TASK_SUCCESS: {
+            const { taskId } = action.payload;
             return {
                 ...state,
                 activities: {
                     ...state.activities,
                     creates: {
                         ...state.activities.creates,
+                        taskId,
                         status: 'CREATED',
                     },
                 },
diff --git a/cvat/apps/engine/serializers.py b/cvat/apps/engine/serializers.py
index 9edac559d784..a878e9e67663 100644
--- a/cvat/apps/engine/serializers.py
+++ b/cvat/apps/engine/serializers.py
@@ -37,6 +37,7 @@ def to_representation(self, instance):
 class LabelSerializer(serializers.ModelSerializer):
     attributes = AttributeSerializer(many=True, source='attributespec_set',
         default=[])
+
     class Meta:
         model = models.Label
         fields = ('id', 'name', 'attributes')
@@ -305,6 +306,15 @@ def update(self, instance, validated_data):
         instance.save()
         return instance
 
+    def validate_labels(self, value):
+        if not value:
+            raise serializers.ValidationError('Label set must not be empty')
+        label_names = [label['name'] for label in value]
+        if len(label_names) != len(set(label_names)):
+            raise serializers.ValidationError('All label names must be unique for the task')
+        return value
+
+
 class ProjectSerializer(serializers.ModelSerializer):
     class Meta:
         model = models.Project
diff --git a/tests/cypress/support/commands.js b/tests/cypress/support/commands.js
index d8c338c87c21..ec62c1bdcb2e 100644
--- a/tests/cypress/support/commands.js
+++ b/tests/cypress/support/commands.js
@@ -34,7 +34,7 @@ Cypress.Commands.add('createAnnotationTask', (taksName='New annotation task',
     cy.get('input[type="file"]').attachFile(image, { subjectType: 'drag-n-drop' });
     cy.contains('button', 'Submit').click()
     cy.contains('The task has been created', {timeout: '8000'})
-    cy.get('button[value="tasks"]').click()
+    cy.get('[value="tasks"]').click()
     cy.url().should('include', '/tasks?page=')
 })