diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57f8411..b4e9e18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -56,6 +56,7 @@ v2.0
 - Fix FLEXIAPI-337 Generate the provisioning URLs based on the user space
 - Fix FLEXIAPI-326 Rework email templates and translations
 - Fix FLEXIAPI-340 Fix the space resolution when getting the realm on Accounts
+- Fix FLEXIAPI-341 Allow realm to be empty when creating a Space
 
 v1.6
 ----
diff --git a/RELEASE.md b/RELEASE.md
index 7c8af26..07c98b7 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,6 +1,5 @@
 # Releases
 
-
 All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/).
diff --git a/flexiapi/app/Http/Controllers/Admin/SpaceController.php b/flexiapi/app/Http/Controllers/Admin/SpaceController.php
index c985293..ddf2b85 100644
--- a/flexiapi/app/Http/Controllers/Admin/SpaceController.php
+++ b/flexiapi/app/Http/Controllers/Admin/SpaceController.php
@@ -20,6 +20,7 @@
 namespace App\Http\Controllers\Admin;
 
 use App\Http\Controllers\Controller;
+use App\Http\Requests\Space\Create;
 use App\Space;
 use App\Rules\Ini;
 use App\Rules\Domain;
@@ -55,7 +56,7 @@ class SpaceController extends Controller
         ]);
     }
 
-    public function store(Request $request)
+    public function store(Create $request)
     {
         $fullHost = empty($request->get('host'))
             ? config('app.root_host')
@@ -63,11 +64,8 @@ class SpaceController extends Controller
 
         $request->merge(['full_host' => $fullHost]);
         $request->validate([
-            'name' => 'required|unique:spaces',
-            'domain' => ['required', 'unique:spaces', new Domain()],
             'host' => 'nullable|regex:/'. Space::HOST_REGEX . '/',
             'full_host' => ['required', 'unique:spaces,host', new Domain()],
-            'account_realm' => [new Domain()],
         ]);
 
         $space = new Space();
diff --git a/flexiapi/app/Http/Controllers/Api/Admin/SpaceController.php b/flexiapi/app/Http/Controllers/Api/Admin/SpaceController.php
index 3e5cc6f..e44e131 100644
--- a/flexiapi/app/Http/Controllers/Api/Admin/SpaceController.php
+++ b/flexiapi/app/Http/Controllers/Api/Admin/SpaceController.php
@@ -20,9 +20,10 @@
 namespace App\Http\Controllers\Api\Admin;
 
 use App\Space;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Space\Create;
 use App\Rules\Domain;
 use App\Rules\Ini;
-use App\Http\Controllers\Controller;
 
 use Illuminate\Http\Request;
 use Illuminate\Validation\Rule;
@@ -34,15 +35,13 @@ class SpaceController extends Controller
         return Space::all();
     }
 
-    public function store(Request $request)
+    public function store(Create $request)
     {
         $request->validate([
-            'name' => 'required|unique:spaces',
-            'domain' => ['required', 'unique:spaces', new Domain()],
             'host' => ['required', 'unique:spaces', new Domain()],
             'max_accounts' => 'nullable|integer',
             'expire_at' => 'nullable|date|after_or_equal:today',
-            'custom_provisioning_entries' => ['nullable', new Ini(Space::FORBIDDEN_KEYS)]
+            'custom_provisioning_entries' => ['nullable', new Ini(Space::FORBIDDEN_KEYS)],
         ]);
 
         $space = new Space;
@@ -105,6 +104,7 @@ class SpaceController extends Controller
             'max_account' => 'required|integer',
             'max_accounts' => 'required|integer',
             'expire_at' => 'nullable|date|after_or_equal:today',
+            'account_realm' => ['nullable', new Domain()],
 
             'custom_provisioning_entries' => ['nullable', new Ini(Space::FORBIDDEN_KEYS)],
             'custom_provisioning_overwrite_all' => 'required|boolean',
diff --git a/flexiapi/app/Http/Requests/Space/Create.php b/flexiapi/app/Http/Requests/Space/Create.php
new file mode 100644
index 0000000..56fb7f3
--- /dev/null
+++ b/flexiapi/app/Http/Requests/Space/Create.php
@@ -0,0 +1,38 @@
+<?php
+/*
+    Flexisip Account Manager is a set of tools to manage SIP accounts.
+    Copyright (C) 2023 Belledonne Communications SARL, All rights reserved.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace App\Http\Requests\Space;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+use App\EmailServer;
+use App\Rules\Domain;
+
+class Create extends FormRequest
+{
+    public function rules()
+    {
+        return [
+            'name' => 'required|unique:spaces',
+            'domain' => ['required', 'unique:spaces', new Domain()],
+            'account_realm' => ['nullable', new Domain()],
+        ];
+    }
+}
diff --git a/flexiapi/resources/views/api/documentation_markdown.blade.php b/flexiapi/resources/views/api/documentation_markdown.blade.php
index 30c2b2e..6005b4c 100644
--- a/flexiapi/resources/views/api/documentation_markdown.blade.php
+++ b/flexiapi/resources/views/api/documentation_markdown.blade.php
@@ -140,13 +140,14 @@ Get a Space.
 ### `POST /spaces`
 <span class="badge badge-error">Super Admin</span>
 
-Create a new `sip_domain`.
+Create a new `space`.
 
 JSON parameters:
 
 * `name` **required**, the space name
 * `domain` **required**, the SIP domain to use, must be unique
-* `super` **required**, boolean, set the domain as a Super Domain
+* `host` **required**, the space host
+* `super` boolean, set the domain as a Super Domain
 * `disable_chat_feature` boolean, disable the chat feature, default to `false`
 * `disable_meetings_feature` boolean, disable the meeting feature, default to `false`
 * `disable_broadcast_feature` boolean, disable the broadcast feature, default to `true`
diff --git a/flexiapi/tests/Feature/ApiSpaceTest.php b/flexiapi/tests/Feature/ApiSpaceTest.php
index d4ada00..4300988 100644
--- a/flexiapi/tests/Feature/ApiSpaceTest.php
+++ b/flexiapi/tests/Feature/ApiSpaceTest.php
@@ -78,15 +78,38 @@ class ApiSpaceTest extends TestCase
         $admin->generateUserApiKey();
 
         $thirdDomain = 'third.domain';
+        $accountRealm = 'account.realm';
 
         $response = $this->keyAuthenticated($admin)
             -> json($this->method, $this->route, [
                 'name' => $thirdDomain,
                 'domain' => $thirdDomain,
                 'host' => $thirdDomain,
-                'super' => false
             ])
-            ->assertStatus(201);
+            ->assertStatus(201)
+            ->assertJsonFragment([
+                'super' => false,
+                'account_realm' => null
+            ]);
+
+        $this->keyAuthenticated($admin)
+            -> json($this->method, $this->route, [
+                'name' => 'Another Domain',
+                'domain' => 'baddomain',
+                'host' => $thirdDomain,
+            ])
+            ->assertJsonValidationErrors(['domain']);
+
+        $this->keyAuthenticated($admin)
+            -> json($this->method, $this->route, [
+                'name' => 'Another Domain',
+                'domain' => 'another.domain',
+                'host' => 'another.host',
+                'account_realm' => $accountRealm
+            ])
+            ->assertJsonFragment([
+                'account_realm' => $accountRealm
+            ]);
 
         $this->keyAuthenticated($admin)
             ->json('GET', $this->route)
@@ -94,7 +117,6 @@ class ApiSpaceTest extends TestCase
                 'name' => $thirdDomain,
                 'domain' => $thirdDomain,
                 'host' => $thirdDomain,
-                'super' => false
             ])
             ->assertStatus(200);