diff --git a/config/packages/security.yaml b/config/packages/security.yaml
index 5478adc3..ab03ff47 100644
--- a/config/packages/security.yaml
+++ b/config/packages/security.yaml
@@ -1,6 +1,6 @@
 security:
     encoders:
-        App\Entity\User:
+        App\Entity\UserSystem\User:
             algorithm: auto
 
     # https://symfony.com/doc/current/security.html#where-do-users-come-from-user-providers
@@ -8,7 +8,7 @@ security:
         # used to reload user from session & other features (e.g. switch_user)
         app_user_provider:
             entity:
-                class: App\Entity\User
+                class: App\Entity\UserSystem\User
                 property: name
     firewalls:
         dev:
diff --git a/src/Controller/AdminPages/AttachmentTypeController.php b/src/Controller/AdminPages/AttachmentTypeController.php
index 54d9bec1..d9585a2d 100644
--- a/src/Controller/AdminPages/AttachmentTypeController.php
+++ b/src/Controller/AdminPages/AttachmentTypeController.php
@@ -33,7 +33,7 @@ namespace App\Controller\AdminPages;
 
 
 use App\Entity\Attachments\AttachmentType;
-use App\Form\BaseEntityAdminForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/AdminPages/BaseAdminController.php b/src/Controller/AdminPages/BaseAdminController.php
index f8051d57..fe04cda0 100644
--- a/src/Controller/AdminPages/BaseAdminController.php
+++ b/src/Controller/AdminPages/BaseAdminController.php
@@ -33,8 +33,9 @@ namespace App\Controller\AdminPages;
 
 use App\Entity\Base\NamedDBElement;
 use App\Entity\Base\StructuralDBElement;
-use App\Form\BaseEntityAdminForm;
-use App\Form\ImportType;
+use App\Form\AdminPages\BaseEntityAdminForm;
+use App\Form\AdminPages\ImportType;
+use App\Form\AdminPages\MassCreationForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
@@ -118,10 +119,30 @@ abstract class BaseAdminController extends AbstractController
             }
         }
 
+        //Mass creation form
+        $mass_creation_form = $this->createForm(MassCreationForm::class, ['entity_class' => $this->entity_class]);
+        $mass_creation_form->handleRequest($request);
+
+        if ($mass_creation_form->isSubmitted() && $mass_creation_form->isValid()) {
+            $data = $mass_creation_form->getData();
+
+            dump($data);
+
+            //Create entries based on input
+            $errors = $importer->massCreation($data['lines'], $this->entity_class, $data['parent']);
+
+            //Show errors to user:
+            foreach ($errors as $name => $error) {
+                /** @var $error ConstraintViolationList */
+                $this->addFlash('error', $name . ":" . $error);
+            }
+        }
+
         return $this->render($this->twig_template, [
             'entity' => $new_entity,
             'form' => $form->createView(),
-            'import_form' => $import_form->createView()
+            'import_form' => $import_form->createView(),
+            'mass_creation_form' => $mass_creation_form->createView()
         ]);
     }
 
diff --git a/src/Controller/AdminPages/CategoryController.php b/src/Controller/AdminPages/CategoryController.php
index dcb08e93..11098663 100644
--- a/src/Controller/AdminPages/CategoryController.php
+++ b/src/Controller/AdminPages/CategoryController.php
@@ -34,8 +34,8 @@ namespace App\Controller\AdminPages;
 
 use App\Entity\Attachments\AttachmentType;
 use App\Entity\Parts\Category;
-use App\Form\BaseEntityAdminForm;
-use App\Form\CategoryAdminForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
+use App\Form\AdminPages\CategoryAdminForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/AdminPages/DeviceController.php b/src/Controller/AdminPages/DeviceController.php
index 963d0862..06d15fd2 100644
--- a/src/Controller/AdminPages/DeviceController.php
+++ b/src/Controller/AdminPages/DeviceController.php
@@ -35,7 +35,7 @@ namespace App\Controller\AdminPages;
 use App\Entity\Attachments\AttachmentType;
 
 use App\Entity\Devices\Device;
-use App\Form\BaseEntityAdminForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/AdminPages/FootprintController.php b/src/Controller/AdminPages/FootprintController.php
index 28c764d0..666980c2 100644
--- a/src/Controller/AdminPages/FootprintController.php
+++ b/src/Controller/AdminPages/FootprintController.php
@@ -35,7 +35,7 @@ namespace App\Controller\AdminPages;
 use App\Entity\Attachments\AttachmentType;
 
 use App\Entity\Parts\Footprint;
-use App\Form\BaseEntityAdminForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/AdminPages/ManufacturerController.php b/src/Controller/AdminPages/ManufacturerController.php
index e2520161..6e4f4aba 100644
--- a/src/Controller/AdminPages/ManufacturerController.php
+++ b/src/Controller/AdminPages/ManufacturerController.php
@@ -36,8 +36,8 @@ use App\Entity\Attachments\AttachmentType;
 
 use App\Entity\Parts\Manufacturer;
 use App\Entity\Parts\Supplier;
-use App\Form\BaseEntityAdminForm;
-use App\Form\CompanyForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
+use App\Form\AdminPages\CompanyForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/AdminPages/StorelocationController.php b/src/Controller/AdminPages/StorelocationController.php
index d5f1ab4b..5e28b001 100644
--- a/src/Controller/AdminPages/StorelocationController.php
+++ b/src/Controller/AdminPages/StorelocationController.php
@@ -34,8 +34,8 @@ namespace App\Controller\AdminPages;
 use App\Entity\Attachments\AttachmentType;
 
 use App\Entity\Parts\Storelocation;
-use App\Form\BaseEntityAdminForm;
-use App\Form\StorelocationAdminForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
+use App\Form\AdminPages\StorelocationAdminForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/AdminPages/SupplierController.php b/src/Controller/AdminPages/SupplierController.php
index d3da9c5d..31be2776 100644
--- a/src/Controller/AdminPages/SupplierController.php
+++ b/src/Controller/AdminPages/SupplierController.php
@@ -35,8 +35,8 @@ namespace App\Controller\AdminPages;
 use App\Entity\Attachments\AttachmentType;
 
 use App\Entity\Parts\Supplier;
-use App\Form\BaseEntityAdminForm;
-use App\Form\CompanyForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
+use App\Form\AdminPages\CompanyForm;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
 use App\Services\StructuralElementRecursionHelper;
diff --git a/src/Controller/UserController.php b/src/Controller/UserController.php
index 2a728a19..b0ed066a 100644
--- a/src/Controller/UserController.php
+++ b/src/Controller/UserController.php
@@ -32,7 +32,7 @@ namespace App\Controller;
 use App\Entity\Attachments\AttachmentType;
 use App\Entity\Parts\Footprint;
 use App\Entity\UserSystem\User;
-use App\Form\BaseEntityAdminForm;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use App\Form\UserAdminForm;
 use App\Form\UserSettingsType;
 use App\Services\EntityExporter;
diff --git a/src/Form/BaseEntityAdminForm.php b/src/Form/AdminPages/BaseEntityAdminForm.php
similarity index 99%
rename from src/Form/BaseEntityAdminForm.php
rename to src/Form/AdminPages/BaseEntityAdminForm.php
index e7dc268a..e9df8e96 100644
--- a/src/Form/BaseEntityAdminForm.php
+++ b/src/Form/AdminPages/BaseEntityAdminForm.php
@@ -29,7 +29,7 @@
  *
  */
 
-namespace App\Form;
+namespace App\Form\AdminPages;
 
 
 use App\Entity\Base\NamedDBElement;
diff --git a/src/Form/CategoryAdminForm.php b/src/Form/AdminPages/CategoryAdminForm.php
similarity index 98%
rename from src/Form/CategoryAdminForm.php
rename to src/Form/AdminPages/CategoryAdminForm.php
index eaf658ab..b88be820 100644
--- a/src/Form/CategoryAdminForm.php
+++ b/src/Form/AdminPages/CategoryAdminForm.php
@@ -29,10 +29,11 @@
  *
  */
 
-namespace App\Form;
+namespace App\Form\AdminPages;
 
 
 use App\Entity\Base\NamedDBElement;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
 use Symfony\Component\Form\Extension\Core\Type\TextType;
 use Symfony\Component\Form\FormBuilderInterface;
diff --git a/src/Form/CompanyForm.php b/src/Form/AdminPages/CompanyForm.php
similarity index 97%
rename from src/Form/CompanyForm.php
rename to src/Form/AdminPages/CompanyForm.php
index 27b9eca6..42328713 100644
--- a/src/Form/CompanyForm.php
+++ b/src/Form/AdminPages/CompanyForm.php
@@ -29,10 +29,11 @@
  *
  */
 
-namespace App\Form;
+namespace App\Form\AdminPages;
 
 
 use App\Entity\Base\NamedDBElement;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
 use Symfony\Component\Form\Extension\Core\Type\EmailType;
 use Symfony\Component\Form\Extension\Core\Type\TelType;
diff --git a/src/Form/ImportType.php b/src/Form/AdminPages/ImportType.php
similarity index 97%
rename from src/Form/ImportType.php
rename to src/Form/AdminPages/ImportType.php
index e4c61ca8..f3c6184a 100644
--- a/src/Form/ImportType.php
+++ b/src/Form/AdminPages/ImportType.php
@@ -29,7 +29,7 @@
  *
  */
 
-namespace App\Form;
+namespace App\Form\AdminPages;
 
 
 use App\Entity\Base\StructuralDBElement;
@@ -71,7 +71,7 @@ class ImportType extends AbstractType
                 'disabled' => $disabled])
             ->add('csv_separator', TextType::class, ['data' => ';', 'label' => 'import.csv_separator',
                 'disabled' => $disabled]);
-            if($data['entity_class'] instanceof StructuralDBElement) {
+            if($entity instanceof StructuralDBElement) {
                 $builder->
                 add('parent', EntityType::class, ['class' => $data['entity_class'], 'choice_label' => 'full_path',
                     'attr' => ['class' => 'selectpicker', 'data-live-search' => true], 'required' => false,
diff --git a/src/Form/AdminPages/MassCreationForm.php b/src/Form/AdminPages/MassCreationForm.php
new file mode 100644
index 00000000..d8909de4
--- /dev/null
+++ b/src/Form/AdminPages/MassCreationForm.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ *
+ * part-db version 0.1
+ * Copyright (C) 2005 Christoph Lechner
+ * http://www.cl-projects.de/
+ *
+ * part-db version 0.2+
+ * Copyright (C) 2009 K. Jacobs and others (see authors.php)
+ * http://code.google.com/p/part-db/
+ *
+ * Part-DB Version 0.4+
+ * Copyright (C) 2016 - 2019 Jan Böhmer
+ * https://github.com/jbtronics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ *
+ */
+
+namespace App\Form\AdminPages;
+
+
+use App\Entity\Base\StructuralDBElement;
+use Symfony\Bridge\Doctrine\Form\Type\EntityType;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
+use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
+use Symfony\Component\Form\Extension\Core\Type\FileType;
+use Symfony\Component\Form\Extension\Core\Type\SubmitType;
+use Symfony\Component\Form\Extension\Core\Type\TextareaType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\Security\Core\Security;
+
+class MassCreationForm extends AbstractType
+{
+    protected $security;
+
+    public function __construct(Security $security)
+    {
+        $this->security = $security;
+    }
+
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+
+        $data = $options['data'];
+
+        //Disable import if user is not allowed to create elements.
+        $entity = new $data['entity_class']();
+        $perm_name = "create";
+        $disabled = ! $this->security->isGranted($perm_name, $entity);
+
+        $builder
+            ->add('lines', TextareaType::class, ['data' => '', 'label' => 'mass_creation.lines',
+                'disabled' => $disabled, 'required' => true,
+                'attr' => ['placeholder' => 'mass_creation.lines.placeholder', 'rows' => 10]]);
+        if ($entity instanceof StructuralDBElement) {
+            $builder->
+                add('parent', EntityType::class, ['class' => $data['entity_class'], 'choice_label' => 'full_path',
+                    'attr' => ['class' => 'selectpicker', 'data-live-search' => true], 'required' => false,
+                    'label' => 'parent.label', 'disabled' => $disabled]);
+        }
+
+        $builder
+            //Buttons
+            ->add('create', SubmitType::class, ['label' => 'mass_creation.btn', 'disabled' => $disabled]);
+    }
+}
\ No newline at end of file
diff --git a/src/Form/StorelocationAdminForm.php b/src/Form/AdminPages/StorelocationAdminForm.php
similarity index 95%
rename from src/Form/StorelocationAdminForm.php
rename to src/Form/AdminPages/StorelocationAdminForm.php
index ef9dab18..6edf8f51 100644
--- a/src/Form/StorelocationAdminForm.php
+++ b/src/Form/AdminPages/StorelocationAdminForm.php
@@ -29,10 +29,11 @@
  *
  */
 
-namespace App\Form;
+namespace App\Form\AdminPages;
 
 
 use App\Entity\Base\NamedDBElement;
+use App\Form\AdminPages\BaseEntityAdminForm;
 use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
 use Symfony\Component\Form\Extension\Core\Type\TextType;
 use Symfony\Component\Form\FormBuilderInterface;
diff --git a/src/Services/EntityImporter.php b/src/Services/EntityImporter.php
index a76e9955..12827ed4 100644
--- a/src/Services/EntityImporter.php
+++ b/src/Services/EntityImporter.php
@@ -32,6 +32,7 @@
 namespace App\Services;
 
 
+use App\Entity\Base\NamedDBElement;
 use App\Entity\Base\StructuralDBElement;
 use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Bundle\MakerBundle\Str;
@@ -65,6 +66,47 @@ class EntityImporter
         ]);
     }
 
+    /**
+     * Creates many entries at once, based on a (text) list of names.
+     *
+     * @param string $lines The list of names seperated by \n
+     * @param string $class_name The name of the class for which the entities should be created
+     * @param StructuralDBElement|null $parent The element which will be used as parent element for new elements.
+     * @return array An associative array containing an ConstraintViolationList and the entity name as key are returned,
+     * if an error happened during validation. When everything was successfull, the array should be empty.
+     */
+    public function massCreation(string $lines, string $class_name, ?StructuralDBElement $parent) : array
+    {
+        //Expand every line to a single entry:
+        $names = explode("\n", $lines);
+
+        $errors = array();
+
+        foreach ($names as $name) {
+            $name = trim($name);
+            /** @var $entity StructuralDBElement */
+            //Create new element with given name
+            $entity = new $class_name();
+            $entity->setName($name);
+            $entity->setParent($parent);
+
+            //Validate entity
+            $tmp = $this->validator->validate($entity);
+            //If no error occured, write entry to DB:
+            if (count($tmp) === 0) {
+                $this->em->persist($entity);
+            } else { //Otherwise log error
+                dump($tmp);
+                $errors[$entity->getFullPath()] = $tmp;
+            }
+        }
+
+        //Save changes to database
+        $this->em->flush();
+
+        return $errors;
+    }
+
     /**
      * This methods deserializes the given file and saves it database.
      * The imported elements will be checked (validated) before written to database.
@@ -96,7 +138,7 @@ class EntityImporter
             $tmp = $this->validator->validate($entity);
 
             //When no validation error occured, persist entity to database (cascade must be set in entity)
-            if ($tmp === null) {
+            if (count($errors) === 0) {
                 $this->em->persist($entity);
             } else { //Log validation errors to global log.
                 $errors[$entity->getFullPath()] = $tmp;
diff --git a/templates/AdminPages/EntityAdminBase.html.twig b/templates/AdminPages/EntityAdminBase.html.twig
index 7f971e72..f3d4e23a 100644
--- a/templates/AdminPages/EntityAdminBase.html.twig
+++ b/templates/AdminPages/EntityAdminBase.html.twig
@@ -45,6 +45,7 @@
                         <li class="nav-item"><a data-toggle="tab" class="link-anchor nav-link" href="#export">{% trans %}export.label{% endtrans %}</a> </li>
                     {% else %}
                         <li class="nav-item"><a data-toggle="tab" class="link-anchor nav-link" href="#import_export">{% trans %}import_export.label{% endtrans %}</a> </li>
+                        <li class="nav-item"><a data-toggle="tab" class="link-anchor nav-link" href="#mass_creation">{% trans %}mass_creation.label{% endtrans %}</a></li>
                     {% endif %}
                 </ul>
 
@@ -148,6 +149,11 @@
                             </fieldset>
                         </div>
 
+                        <div id="mass_creation" class="tab-pane fade">
+                            <span class="text-muted">{% trans %}mass_creation.help{% endtrans %}</span>
+                            {{ form(mass_creation_form) }}
+                        </div>
+
 
                     {% endif %}