diff --git a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2RequestMapper.java
similarity index 98%
rename from src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java
rename to src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2RequestMapper.java
index c9a42ae3fa9756dfe2ac34d20bfd73405f85a5fe..4b1482c4efeb283320bd9abace07dc89da77f52f 100644
--- a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java
+++ b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2RequestMapper.java
@@ -17,7 +17,7 @@ import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.V1References;
 import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.V1ReplyBehavior;
 
 @Mapper(unmappedTargetPolicy = ReportingPolicy.ERROR)
-public interface RequestMapper {
+public interface Osi2RequestMapper {
 
 	@Mapping(target = "sequencenumber", source = "vorgangId")
 	@Mapping(target = "body", source = "mailBody")
diff --git a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/ResponseMapper.java b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2ResponseMapper.java
similarity index 97%
rename from src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/ResponseMapper.java
rename to src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2ResponseMapper.java
index 84a1b80ce2f3ac508b39ce35bd9c52edc6f5ce4b..f5acb80a874aed8cf323aca797cbc5488f7846f5 100644
--- a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/ResponseMapper.java
+++ b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2ResponseMapper.java
@@ -1,7 +1,6 @@
 package de.ozgcloud.nachrichten.postfach.osiv2.transfer;
 
 import java.time.ZoneOffset;
-import java.time.format.DateTimeFormatter;
 
 import org.mapstruct.Mapper;
 import org.mapstruct.Mapping;
@@ -17,7 +16,7 @@ import lombok.Builder;
 import lombok.Getter;
 
 @Mapper(unmappedTargetPolicy = ReportingPolicy.ERROR, imports = ZoneOffset.class)
-public interface ResponseMapper {
+public interface Osi2ResponseMapper {
 
 	String POSTFACH_ADDRESS_VERSION = "2.0";
 	int POSTFACH_ADDRESS_TYPE = 2;
diff --git a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeService.java b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeService.java
index 7f62892e8b031e4ce89a716db9c1d2a6952497c1..7d3651aa1d42782ea1feaf76cbfdff25d09ff3dd 100644
--- a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeService.java
+++ b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeService.java
@@ -20,15 +20,15 @@ import lombok.extern.log4j.Log4j2;
 public class PostfachApiFacadeService {
 
 	private final MessageExchangeApi messageExchangeApi;
-	private final RequestMapper requestMapper;
-	private final  ResponseMapper responseMapper;
+	private final Osi2RequestMapper osi2RequestMapper;
+	private final Osi2ResponseMapper osi2ResponseMapper;
 
 	private static int MAX_NUMBER_RECEIVED_MESSAGES = 100;
 
 	public void sendMessage(PostfachNachricht nachricht) {
 		messageExchangeApi.sendMessage(
-				requestMapper.mapMailboxId(nachricht),
-				requestMapper.mapOutSendMessageRequestV2(nachricht)
+				osi2RequestMapper.mapMailboxId(nachricht),
+				osi2RequestMapper.mapOutSendMessageRequestV2(nachricht)
 		);
 	}
 
@@ -39,7 +39,7 @@ public class PostfachApiFacadeService {
 
 	PostfachNachricht fetchMessageByGuid(final MessageExchangeReceiveMessage message) {
 		var messageReply = messageExchangeApi.getMessage(message.getGuid());
-		return responseMapper.toPostfachNachricht(messageReply);
+		return osi2ResponseMapper.toPostfachNachricht(messageReply);
 	}
 
 	public void deleteMessage(final String messageId) {
diff --git a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2RequestMapperTest.java
similarity index 97%
rename from src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java
rename to src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2RequestMapperTest.java
index 0e67c3c307449847d9e9e89e936f6812938ae98a..3abec1a5f53dd2c897230896e38a443eebd4ce4d 100644
--- a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java
+++ b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2RequestMapperTest.java
@@ -23,9 +23,9 @@ import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.OutSendMessageRequestV2;
 import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.V1EidasLevel;
 import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.V1ReplyBehavior;
 
-class RequestMapperTest {
+class Osi2RequestMapperTest {
 
-	private final RequestMapper mapper = Mappers.getMapper(RequestMapper.class);
+	private final Osi2RequestMapper mapper = Mappers.getMapper(Osi2RequestMapper.class);
 
 	@DisplayName("map mailbox id")
 	@Nested
diff --git a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/ResponseMapperTest.java b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2ResponseMapperTest.java
similarity index 96%
rename from src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/ResponseMapperTest.java
rename to src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2ResponseMapperTest.java
index d4c8706356d03230611e185f639484e124b2601d..3ec9b5009bb41bc5339e27fb3ab99d6f63517368 100644
--- a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/ResponseMapperTest.java
+++ b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/Osi2ResponseMapperTest.java
@@ -16,10 +16,10 @@ import de.ozgcloud.nachrichten.postfach.PostfachNachricht;
 import de.ozgcloud.nachrichten.postfach.osiv2.factory.V1ReplyMessageFactory;
 import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.V1ReplyMessage;
 
-class ResponseMapperTest {
+class Osi2ResponseMapperTest {
 
 	@InjectMocks
-	private ResponseMapper mapper = Mappers.getMapper(ResponseMapper.class);
+	private Osi2ResponseMapper mapper = Mappers.getMapper(Osi2ResponseMapper.class);
 	private V1ReplyMessage message = V1ReplyMessageFactory.create();
 
 	@DisplayName("map V1ReplyMessage to PostfachNachricht")
diff --git a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeServiceTest.java b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeServiceTest.java
index 139ba192c9394ddb55d2657e094a2d9d15765866..c1abebba22f3e88935c0465e0bba99d6840a07e5 100644
--- a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeServiceTest.java
+++ b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/PostfachApiFacadeServiceTest.java
@@ -32,10 +32,10 @@ class PostfachApiFacadeServiceTest {
 	MessageExchangeApi messageExchangeApi;
 
 	@Mock
-	RequestMapper requestMapper;
+	Osi2RequestMapper osi2RequestMapper;
 
 	@Mock
-	ResponseMapper responseMapper;
+	Osi2ResponseMapper osi2ResponseMapper;
 
 	@DisplayName("send message")
 	@Nested
@@ -51,8 +51,8 @@ class PostfachApiFacadeServiceTest {
 
 		@BeforeEach
 		void mock() {
-			when(requestMapper.mapMailboxId(nachricht)).thenReturn(MAILBOX_ID);
-			when(requestMapper.mapOutSendMessageRequestV2(nachricht)).thenReturn(outSendMessageRequestV2);
+			when(osi2RequestMapper.mapMailboxId(nachricht)).thenReturn(MAILBOX_ID);
+			when(osi2RequestMapper.mapOutSendMessageRequestV2(nachricht)).thenReturn(outSendMessageRequestV2);
 			when(messageExchangeApi.sendMessage(any(), any())).thenReturn(messageExchangeSendMessageResponse);
 		}
 
@@ -107,17 +107,17 @@ class PostfachApiFacadeServiceTest {
 		@Test
 		void shouldCallResponseMapper(){
 			when(messageExchangeApi.getMessage(any())).thenReturn(replyMessage);
-			when(responseMapper.toPostfachNachricht(any())).thenReturn(PostfachNachrichtTestFactory.create());
+			when(osi2ResponseMapper.toPostfachNachricht(any())).thenReturn(PostfachNachrichtTestFactory.create());
 
 			postfachApiFacadeService.fetchMessageByGuid(receiveMessage);
 
-			verify(responseMapper).toPostfachNachricht(any());
+			verify(osi2ResponseMapper).toPostfachNachricht(any());
 		}
 
 		@Test
 		void shouldReturnPostfachNachricht(){
 			when(messageExchangeApi.getMessage(any())).thenReturn(replyMessage);
-			when(responseMapper.toPostfachNachricht(any())).thenReturn(PostfachNachrichtTestFactory.create());
+			when(osi2ResponseMapper.toPostfachNachricht(any())).thenReturn(PostfachNachrichtTestFactory.create());
 
 			var postfachNachricht = postfachApiFacadeService.fetchMessageByGuid(receiveMessage);