diff --git a/router/src/main/java/de/ozgcloud/eingang/router/VorgangRemoteService.java b/router/src/main/java/de/ozgcloud/eingang/router/VorgangRemoteService.java
index e359c1c58d2b85fc2326c74ac848ef4287f5d972..2a50225927053555819bbd1ac937ed0598088dd4 100644
--- a/router/src/main/java/de/ozgcloud/eingang/router/VorgangRemoteService.java
+++ b/router/src/main/java/de/ozgcloud/eingang/router/VorgangRemoteService.java
@@ -31,7 +31,6 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 import org.apache.commons.io.IOUtils;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import com.google.protobuf.ByteString;
@@ -55,25 +54,28 @@ import de.ozgcloud.vorgang.vorgang.GrpcIncomingFileGroup;
 import de.ozgcloud.vorgang.vorgang.VorgangServiceGrpc.VorgangServiceBlockingStub;
 import io.grpc.stub.CallStreamObserver;
 import io.grpc.stub.StreamObserver;
+import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.log4j.Log4j2;
 
 @Log4j2
+@AllArgsConstructor
 @Service
 public class VorgangRemoteService {
 
-	@Autowired
-	private VorgangManagerServerResolver vorgangManagerServerResolver;
+	private final VorgangManagerServerResolver vorgangManagerServerResolver;
 
-	public String createVorgang(FormData formData, GrpcEingang eingang, Optional<String> organisationsEinheitenId) {
+	private final GrpcEingangMapper grpcEingangMapper;
+
+	public String createVorgang(FormData formData, Optional<String> organisationsEinheitenId) {
 		var vorgangServiceStub = getVorgangServiceStub(organisationsEinheitenId);
 		var binaryFileServiceStub = getBinaryFileServiceStub(organisationsEinheitenId);
 
 		logConnection(organisationsEinheitenId, vorgangServiceStub.get());
 
 		try {
-			return createVorgang(formData, eingang, vorgangServiceStub.get(), binaryFileServiceStub.get());
+			return createVorgang(formData, grpcEingangMapper.toEingang(formData), vorgangServiceStub.get(), binaryFileServiceStub.get());
 		} finally {
 			finishStubConnections(List.of(vorgangServiceStub, binaryFileServiceStub));
 		}
diff --git a/router/src/main/java/de/ozgcloud/eingang/router/VorgangService.java b/router/src/main/java/de/ozgcloud/eingang/router/VorgangService.java
index 9d617ae52e65f0b17720abb50d13aac388ff430e..f93955719be0545b3d73e133feeb4cd72850bdd8 100644
--- a/router/src/main/java/de/ozgcloud/eingang/router/VorgangService.java
+++ b/router/src/main/java/de/ozgcloud/eingang/router/VorgangService.java
@@ -25,25 +25,29 @@ package de.ozgcloud.eingang.router;
 
 import java.util.Optional;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import de.ozgcloud.eingang.common.formdata.FormData;
 import de.ozgcloud.eingang.common.formdata.ZustaendigeStelle;
+import lombok.AllArgsConstructor;
 
+@AllArgsConstructor
 @Service
 public class VorgangService {
 
-	@Autowired
-	private VorgangRemoteService remoteService;
-
-	@Autowired
-	private GrpcEingangMapper grpcEingangMapper;
+	private final VorgangRemoteService remoteService;
 
 	public String createVorgang(FormData formData) {
-		var eingang = grpcEingangMapper.toEingang(formData);
-		var organisationsEinheitenId = Optional.ofNullable(formData.getZustaendigeStelle()).map(ZustaendigeStelle::getOrganisationseinheitenId);
+		var preparedFormData = preserveConsistency(formData);
+
+		return remoteService.createVorgang(preparedFormData, getOrganisationsEinheitId(preparedFormData));
+	}
+
+	private Optional<String> getOrganisationsEinheitId(FormData formData) {
+		return Optional.ofNullable(formData.getZustaendigeStelle()).map(ZustaendigeStelle::getOrganisationseinheitenId);
+	}
 
-		return remoteService.createVorgang(formData, eingang, organisationsEinheitenId);
+	FormData preserveConsistency(FormData formData) {
+		return null;
 	}
 }
\ No newline at end of file
diff --git a/router/src/test/java/de/ozgcloud/eingang/router/VorgangRemoteServiceTest.java b/router/src/test/java/de/ozgcloud/eingang/router/VorgangRemoteServiceTest.java
index 465b61fcdbe88fc611f3990c2a6ec00d5073ab96..993c973ca2f71c645734db5ab5039151b9a0543f 100644
--- a/router/src/test/java/de/ozgcloud/eingang/router/VorgangRemoteServiceTest.java
+++ b/router/src/test/java/de/ozgcloud/eingang/router/VorgangRemoteServiceTest.java
@@ -79,6 +79,8 @@ class VorgangRemoteServiceTest {
 	private VorgangRemoteService remoteService;
 	@Mock
 	private VorgangManagerServerResolver resolver;
+	@Mock
+	private GrpcEingangMapper eingangMapper;
 
 	private VorgangCreator vorgangCreator;
 
@@ -115,6 +117,8 @@ class VorgangRemoteServiceTest {
 			when(resolver.resolveBinaryFileServiceStubByOrganisationsEinheitId(any())).thenReturn(managableBinaryFileServiceStub);
 			when(managableBinaryFileServiceStub.get()).thenReturn(binaryFileServiceStub);
 
+			when(eingangMapper.toEingang(any())).thenReturn(eingang);
+
 			doNothing().when(remoteService).logConnection(any(), any());
 			doNothing().when(remoteService).finishStubConnections(any());
 		}
@@ -151,6 +155,13 @@ class VorgangRemoteServiceTest {
 				verify(remoteService).createVorgang(formData, eingang, vorgangServiceStub, binaryFileServiceStub);
 			}
 
+			@Test
+			void shouldCallEingangMapper() {
+				createVorgang();
+
+				verify(eingangMapper).toEingang(formData);
+			}
+
 			@Test
 			void shouldFinishStubConnection() {
 				createVorgang();
@@ -192,7 +203,7 @@ class VorgangRemoteServiceTest {
 
 		@SneakyThrows
 		private String createVorgang() {
-			return remoteService.createVorgang(formData, eingang, organisationsEinheitId);
+			return remoteService.createVorgang(formData, organisationsEinheitId);
 		}
 	}
 
diff --git a/router/src/test/java/de/ozgcloud/eingang/router/VorgangServiceTest.java b/router/src/test/java/de/ozgcloud/eingang/router/VorgangServiceTest.java
index 09a272ead29a6ef327ceb514b4305870459a0b8b..5425c19d615ab4d6943459f2e0c3bf13ae3cffae 100644
--- a/router/src/test/java/de/ozgcloud/eingang/router/VorgangServiceTest.java
+++ b/router/src/test/java/de/ozgcloud/eingang/router/VorgangServiceTest.java
@@ -23,24 +23,25 @@
  */
 package de.ozgcloud.eingang.router;
 
-import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
 import java.util.Optional;
 
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
+import org.mockito.Spy;
 
 import de.ozgcloud.eingang.common.formdata.FormData;
 import de.ozgcloud.eingang.common.formdata.FormDataTestFactory;
 import de.ozgcloud.eingang.common.formdata.ZustaendigeStelleTestFactory;
-import de.ozgcloud.vorgang.vorgang.GrpcEingang;
 
 class VorgangServiceTest {
 
+	@Spy
 	@InjectMocks
 	private VorgangService service;
 	@Mock
@@ -48,26 +49,45 @@ class VorgangServiceTest {
 	@Mock
 	private VorgangRemoteService remoteService;
 
+	@DisplayName("Create vorgang")
 	@Nested
 	class TestCreateVorgang {
 
-		private FormData formData = FormDataTestFactory.create();
-		private GrpcEingang eingang = GrpcEingang.newBuilder().build();
+		private final FormData formData = FormDataTestFactory.create();
+		private final FormData preservedFormData = FormDataTestFactory.create();
 
 		@BeforeEach
 		void mockEingangMapper() {
-			when(eingangMapper.toEingang(any())).thenReturn(eingang);
+			doReturn(preservedFormData).when(service).preserveConsistency(formData);
+		}
+
+		@Test
+		void shouldPreserverConsistency() {
+			callCreateVorgang();
+
+			verify(service).preserveConsistency(formData);
 		}
 
 		@Test
 		void shouldCallRemoteService() {
-			callCreateVorgangNew();
+			callCreateVorgang();
 
-			verify(remoteService).createVorgang(formData, eingang, Optional.ofNullable(ZustaendigeStelleTestFactory.ORGANISATIONSEINHEIT_ID));
+			verify(remoteService).createVorgang(preservedFormData, Optional.ofNullable(ZustaendigeStelleTestFactory.ORGANISATIONSEINHEIT_ID));
 		}
 
-		private void callCreateVorgangNew() {
+		private void callCreateVorgang() {
 			service.createVorgang(formData);
 		}
 	}
+
+	@DisplayName("Preserve consistency")
+	@Nested
+	class TestPreserveConsistency {
+
+		@DisplayName("should set serviceKonto to null if no postfachAddress exists")
+		@Test
+		void shouldSetServiceKontoToNull() {
+
+		}
+	}
 }
\ No newline at end of file