diff --git a/pluto-server/src/main/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserId.java b/pluto-server/src/main/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserId.java
index 5928feea1b0044f7d59ba5366cfd3b140907791b..2efee90d68e7a131b4a3c9f3963a3692bc9971d6 100644
--- a/pluto-server/src/main/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserId.java
+++ b/pluto-server/src/main/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserId.java
@@ -24,6 +24,8 @@ import lombok.extern.log4j.Log4j2;
 public class M012_MigrationUserId {// NOSONAR
 
 	private static final String KOP_USERMANAGER_URL_KEY = "kop.usermanager.url";
+	private static final String SYSTEM_USER_PREFIX = "system";
+
 	static final String COLLECTION_VORGANG_NAME = "vorgang";
 	static final String ASSIGNED_TO_FIELD = "assignedTo";
 
@@ -137,6 +139,10 @@ public class M012_MigrationUserId {// NOSONAR
 	}
 
 	private Optional<String> getNewInternalId(String currentId) {
+		if (currentId.startsWith(SYSTEM_USER_PREFIX)) {
+			return Optional.empty();
+		}
+
 		try {
 			return Optional.of(getInternalId(currentId));
 		} catch (HttpClientErrorException e) {
diff --git a/pluto-server/src/main/resources/application-local.yml b/pluto-server/src/main/resources/application-local.yml
index 3771011de521e481d24e72ff7770c5f2fb28ffc3..d579ea1636eeba4a2b3214b4e253b8f7839fe8a7 100644
--- a/pluto-server/src/main/resources/application-local.yml
+++ b/pluto-server/src/main/resources/application-local.yml
@@ -54,7 +54,7 @@ kop:
   notification:
     mail-from: ea@ozg-sh.de
   usermanager:
-    url: http://localhost:8080/api/migrate/user
+    url: http://localhost:9092/migration/user
         
 aktenzeichen: de.itvsh.ozg.pluto.vorgang.AktenzeichenProviderEA
 
diff --git a/pluto-server/src/test/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserIdITCase.java b/pluto-server/src/test/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserIdITCase.java
index bf2623fc255ce4f65121b8da97777a0e8ee8a8b5..ddd498ccd19f7784c61f197c945c76d68c55c647 100644
--- a/pluto-server/src/test/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserIdITCase.java
+++ b/pluto-server/src/test/java/de/itvsh/ozg/pluto/common/migration/M012_MigrationUserIdITCase.java
@@ -289,6 +289,7 @@ class M012_MigrationUserIdITCase {
 		@Nested
 		class TestAttachedItemCreatedBy {
 
+			private static final String SYSTEM_NOTIFICATION_MANAGER_NEW_VORGANG = "system-notification_manager-new_vorgang";
 			private final static String CREATED_BY = UUID.randomUUID().toString();
 			private final static String NEW_CREATED_BY = new ObjectId().toHexString();
 
@@ -298,7 +299,7 @@ class M012_MigrationUserIdITCase {
 			void init() {
 				dbUtils.dropVorgangAttachedItemCollection();
 
-				vorganAttachedItem = dbUtils.saveVorgangAttachedItem(createVorgangAttachedItemWithCreatedBy());
+				vorganAttachedItem = dbUtils.saveVorgangAttachedItem(createVorgangAttachedItemWithCreatedBy(CREATED_BY));
 			}
 
 			@Test
@@ -311,6 +312,17 @@ class M012_MigrationUserIdITCase {
 						.containsEntry(M012_MigrationUserId.CREATED_BY_FIELD, NEW_CREATED_BY);
 			}
 
+			@Test
+			void shouldNotMigrateOnSystemUser() {
+				dbUtils.dropVorgangAttachedItemCollection();
+				vorganAttachedItem = dbUtils
+						.saveVorgangAttachedItem(createVorgangAttachedItemWithCreatedBy(SYSTEM_NOTIFICATION_MANAGER_NEW_VORGANG));
+
+				migrateVorgangAttachedItemCreatedBy();
+
+				verify(migration, never()).getInternalId(any());
+			}
+
 			@DisplayName("on exception")
 			@Nested
 			class TestOnException {
@@ -362,7 +374,7 @@ class M012_MigrationUserIdITCase {
 
 				@Test
 				void shouldFindWithOldCreatedByData() {
-					dbUtils.saveVorgangAttachedItem(createVorgangAttachedItemWithCreatedBy());
+					dbUtils.saveVorgangAttachedItem(createVorgangAttachedItemWithCreatedBy(CREATED_BY));
 
 					var vorgangAttachedItems = findVorgangAttachedItem();
 
@@ -387,9 +399,9 @@ class M012_MigrationUserIdITCase {
 				}
 			}
 
-			private static Document createVorgangAttachedItemWithCreatedBy() {
+			private static Document createVorgangAttachedItemWithCreatedBy(String createdById) {
 				return new Document(M012_MigrationUserId.VORGANG_ATTACHED_ITEM_ITEM_FIELD,
-						new Document(M012_MigrationUserId.CREATED_BY_FIELD, CREATED_BY));
+						new Document(M012_MigrationUserId.CREATED_BY_FIELD, createdById));
 			}
 		}
 	}