diff --git a/lib/Adapter/Users/NextcloudUserAdapter.php b/lib/Adapter/Users/NextcloudUserAdapter.php
index 5cadcfe..5f17b97 100644
--- a/lib/Adapter/Users/NextcloudUserAdapter.php
+++ b/lib/Adapter/Users/NextcloudUserAdapter.php
@@ -2,6 +2,7 @@
 
 namespace OCA\SCIMServiceProvider\Adapter\Users;
 
+use OCA\SCIMServiceProvider\AppInfo\Application;
 use OCP\IConfig;
 use OCP\IUser;
 use OCP\IUserManager;
@@ -63,7 +64,7 @@ class NextcloudUserAdapter extends AbstractAdapter
         $coreUser->setDisplayName($ncUser->getDisplayName());
         $coreUser->setActive($ncUser->isEnabled());
 
-		$ncUserExternalId = $this->config->getUserValue($ncUser->getUID(), 'SCIMServiceProvider', 'ExternalId', '');
+		$ncUserExternalId = $this->config->getUserValue($ncUser->getUID(), Application::APP_ID, 'externalId', '');
         $coreUser->setExternalId($ncUserExternalId);
 
         if ($ncUser->getEMailAddress() !== null && !empty($ncUser->getEMailAddress())) {
@@ -106,7 +107,7 @@ class NextcloudUserAdapter extends AbstractAdapter
         }
 
         if ($coreUser->getExternalId() !== null && !empty($coreUser->getExternalId())) {
-            $this->config->setUserValue($ncUser->getUID(), 'SCIMServiceProvider', 'ExternalId', $coreUser->getExternalId());
+            $this->config->setUserValue($ncUser->getUID(), Application::APP_ID, 'externalId', $coreUser->getExternalId());
         }
 
         if ($coreUser->getEmails() !== null && !empty($coreUser->getEmails())) {
diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index e176dd8..4220a8c 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -36,7 +36,7 @@ use Psr\Container\ContainerInterface;
  */
 class Application extends App implements IBootstrap
 {
-    public const APP_ID = 'SCIMServiceProvider';
+    public const APP_ID = 'scimserviceprovider';
 
     public function __construct(array $urlParams = [])
     {
diff --git a/lib/Service/GroupService.php b/lib/Service/GroupService.php
index 77f4391..3840d3a 100644
--- a/lib/Service/GroupService.php
+++ b/lib/Service/GroupService.php
@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace OCA\SCIMServiceProvider\Service;
 
 use Exception;
+use OCA\SCIMServiceProvider\AppInfo\Application;
 use OCA\SCIMServiceProvider\Responses\SCIMErrorResponse;
 use OCA\SCIMServiceProvider\Responses\SCIMJSONResponse;
 use OCA\SCIMServiceProvider\Responses\SCIMListResponse;
@@ -102,7 +103,7 @@ class GroupService
                 return new SCIMErrorResponse(['message' => 'Creating group failed'], 400);
             }
         } catch (Exception $e) {
-            $this->logger->warning('Failed createGroup attempt with SCIMException exception.', ['app' => 'SCIMServiceProvider']);
+            $this->logger->warning('Failed createGroup attempt with SCIMException exception.', ['app' => Application::APP_ID]);
             throw $e;
         }
     }
diff --git a/lib/Service/SCIMUser.php b/lib/Service/SCIMUser.php
index 487017b..8801247 100644
--- a/lib/Service/SCIMUser.php
+++ b/lib/Service/SCIMUser.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace OCA\SCIMServiceProvider\Service;
 
+use OCA\SCIMServiceProvider\AppInfo\Application;
 use OCP\IConfig;
 use OCP\IUserManager;
 
@@ -35,7 +36,7 @@ class SCIMUser {
 		}
 
 		$enabled = $this->config->getUserValue($targetUserObject->getUID(), 'core', 'enabled', 'true') === 'true';
-		$externalId = $this->config->getUserValue($targetUserObject->getUID(), 'SCIMServiceProvider', 'ExternalId', '');
+		$externalId = $this->config->getUserValue($targetUserObject->getUID(), Application::APP_ID, 'externalId', '');
 		$email = $targetUserObject->getSystemEMailAddress();
 
 
@@ -78,7 +79,7 @@ class SCIMUser {
 	 * @throws Exception
 	 */
 	public function setExternalId(string $userId, string $externalId) {
-		$this->config->setUserValue($userId, 'SCIMServiceProvider', 'ExternalId', $externalId);
+		$this->config->setUserValue($userId, Application::APP_ID, 'externalId', $externalId);
 	}
 
 }
diff --git a/lib/Service/UserService.php b/lib/Service/UserService.php
index 9973ea7..74291c1 100644
--- a/lib/Service/UserService.php
+++ b/lib/Service/UserService.php
@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace OCA\SCIMServiceProvider\Service;
 
 use Exception;
+use OCA\SCIMServiceProvider\AppInfo\Application;
 use OCA\SCIMServiceProvider\Responses\SCIMErrorResponse;
 use OCA\SCIMServiceProvider\Responses\SCIMJSONResponse;
 use OCA\SCIMServiceProvider\Responses\SCIMListResponse;
@@ -94,7 +95,7 @@ class UserService
                 return new SCIMErrorResponse(['message' => 'Creating user failed'], 400);
             }
         } catch (Exception $e) {
-            $this->logger->warning('Failed createUser attempt with SCIMException exeption.', ['app' => 'SCIMServiceProvider']);
+            $this->logger->warning('Failed createUser attempt with SCIMException exeption.', ['app' => Application::APP_ID]);
             throw $e;
         }
     }