diff --git a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRepresentationsMapperTest.java b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRepresentationsMapperTest.java
index bc88f739b6302c289de38aab59c77ce25c511581..928aed3a3b980b7f150dc07ef596f3b84e5ca8fe 100644
--- a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRepresentationsMapperTest.java
+++ b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRepresentationsMapperTest.java
@@ -28,16 +28,19 @@ import static de.itvsh.kop.eingangsadapter.formsolutions.FormSolutionsFilesTestF
 import static de.itvsh.kop.eingangsadapter.formsolutions.FormSolutionsRepresentationsMapper.*;
 import static org.assertj.core.api.Assertions.*;
 
+import java.io.File;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 
+import org.junit.jupiter.api.AfterEach;
+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.Spy;
 
 import de.itvsh.kop.common.test.TestUtils;
+import de.itvsh.kop.eingangsadapter.common.file.TempFileUtils;
 import de.itvsh.kop.eingangsadapter.common.formdata.FormSolutionsTestFactory;
 import de.itvsh.kop.eingangsadapter.common.formdata.IncomingFile;
 import lombok.SneakyThrows;
@@ -47,6 +50,18 @@ class FormSolutionsRepresentationsMapperTest {
 	@Spy
 	private FormSolutionsRepresentationsMapper mapper = new FormSolutionsRepresentationsMapper();
 
+	private File simpleJsonFile;
+
+	@BeforeEach
+	void writeJsonFile() {
+		simpleJsonFile = TempFileUtils.writeTmpFile(SIMPLE_JSON_DATA);
+	}
+
+	@AfterEach
+	void delJsonFile() {
+		simpleJsonFile.delete();
+	}
+
 	@DisplayName("Map representations")
 	@Nested
 	class TestMapRepresentations {
@@ -85,7 +100,7 @@ class FormSolutionsRepresentationsMapperTest {
 			}
 
 			private IncomingFile mapRepresentationPdf() {
-				return mapRepresentation(JSON_CONTENT).get(0);
+				return mapRepresentation().get(0);
 			}
 		}
 
@@ -95,7 +110,7 @@ class FormSolutionsRepresentationsMapperTest {
 
 			@Test
 			void shouldHaveSize() {
-				var map = mapRepresentation(SIMPLE_JSON_DATA);
+				var map = mapRepresentation();
 
 				assertThat(map).hasSize(2);
 			}
@@ -133,21 +148,20 @@ class FormSolutionsRepresentationsMapperTest {
 			@Test
 			void shouldParseJsonOnly() {
 				var map = mapper.mapRepresentations(
-						FormSolutionsFilesTestFactory.createBuilder().formData(Map.of())
-								.build().getFormData(),
-						Optional.of(SIMPLE_JSON_DATA));
+						FormSolutionsFilesTestFactory.createBuilder().formData(Map.of()).build().getFormData(),
+						simpleJsonFile);
 
 				assertThat(map).hasSize(1);
 				assertThat(map.get(0).getContentType()).isEqualTo(JSON_CONTENT_TYPE);
 			}
 
 			private IncomingFile mapRepresentationJson() {
-				return mapRepresentation(SIMPLE_JSON_DATA).get(1);
+				return mapRepresentation().get(1);
 			}
 		}
 
-		private List<IncomingFile> mapRepresentation(String content) {
-			return mapper.mapRepresentations(REPRESENTATIONS.getFormData(), Optional.of(content));
+		private List<IncomingFile> mapRepresentation() {
+			return mapper.mapRepresentations(REPRESENTATIONS.getFormData(), simpleJsonFile);
 		}
 	}
 
diff --git a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperITCase.java b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperITCase.java
index f0a012b1d513e3f72f917dcd923d85ccf85ffd34..68b8319759d08b52c1adaab23f3f9abaebbf6ade 100644
--- a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperITCase.java
+++ b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperITCase.java
@@ -36,6 +36,7 @@ import org.springframework.boot.test.mock.mockito.SpyBean;
 import org.springframework.test.context.ActiveProfiles;
 
 import de.itvsh.kop.common.test.TestUtils;
+import de.itvsh.kop.eingangsadapter.common.file.TempFileUtils;
 import de.itvsh.kop.eingangsadapter.common.formdata.FormData;
 import de.itvsh.kop.eingangsadapter.common.formdata.IncomingFile;
 import de.itvsh.kop.eingangsadapter.common.formdata.IncomingFileGroup;
@@ -202,6 +203,9 @@ class FormSolutionsRequestMapperITCase {
 	}
 
 	private FormData parseRequestData(String json) {
-		return mapper.map(json);
+		var file = TempFileUtils.writeTmpFile(json);
+		var result = mapper.map(file);
+		file.delete();
+		return result;
 	}
 }
diff --git a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperTest.java b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperTest.java
index e96b8cdc0fa2629fdb2d44b2de65412db61caae5..4c8f7428ed245913a44409b37312f9222e0c0001 100644
--- a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperTest.java
+++ b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/FormSolutionsRequestMapperTest.java
@@ -30,10 +30,12 @@ import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
 import java.io.File;
+import java.io.InputStream;
 import java.util.List;
 import java.util.Map;
 
-import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
@@ -51,6 +53,7 @@ import de.itvsh.kop.common.errorhandling.TechnicalException;
 import de.itvsh.kop.eingangsadapter.common.file.TempFileUtils;
 import de.itvsh.kop.eingangsadapter.common.formdata.FormDataTestFactory;
 import de.itvsh.kop.eingangsadapter.semantik.enginebased.FilesMapperHelper;
+import lombok.SneakyThrows;
 
 class FormSolutionsRequestMapperTest {
 
@@ -73,54 +76,72 @@ class FormSolutionsRequestMapperTest {
 	@Spy
 	private ObjectMapper objectMapper = new ObjectMapper();
 
+	private File simpleJsonFile;
+	private File nestedComponenetJsonFile;
+
+	@BeforeEach
+	void writeJsonFile() {
+		simpleJsonFile = TempFileUtils.writeTmpFile(SIMPLE_JSON_DATA);
+		nestedComponenetJsonFile = TempFileUtils.writeTmpFile(NESTED_COMPONENTS_JSON);
+	}
+
+	@AfterEach
+	void delJsonFile() {
+		simpleJsonFile.delete();
+		nestedComponenetJsonFile.delete();
+	}
+
 	@Nested
 	class TestJsonToMapMapping {
+
 		@Test
 		void shouldMap() {
-			var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+			var dataMap = mapper.mapFormData(simpleJsonFile);
 
 			assertThat(dataMap).isNotNull();
 		}
 
 		@Test
 		void shouldContainZustaendigeStelle() {
-			var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+			var dataMap = mapper.mapFormData(simpleJsonFile);
 
 			assertThat((String) dataMap.get(ZUSTAENDIGE_STELLE)).isEqualTo(ORGANISATIONSEINHEITEN_ID);
 		}
 
 		@Test
 		void shouldContainsPostfachId() {
-			var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+			var dataMap = mapper.mapFormData(simpleJsonFile);
 
 			assertThat((String) dataMap.get(POSTKORBHANDLE)).isEqualTo(POSTFACH_ID);
 		}
 
 		@Test
 		void shouldContainRequestId() {
-			var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+			var dataMap = mapper.mapFormData(simpleJsonFile);
 
 			assertThat((String) dataMap.get(TRANSACTION_ID)).isEqualTo(FORM_ID_VALUE);
 		}
 
 		@Test
 		void shouldContainAssitant() {
-			var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+			var dataMap = mapper.mapFormData(simpleJsonFile);
 
 			assertThat(dataMap.get(ASSISTANT)).isNotNull();
 		}
 
 		@Test
+		@SneakyThrows
 		void shouldHandleJsonException() throws JsonMappingException, JsonProcessingException {
-			doThrow(JsonProcessingException.class).when(objectMapper).readValue(anyString(), Mockito.<TypeReference<Map<String, Object>>>any());
+			doThrow(JsonProcessingException.class).when(objectMapper).readValue(any(InputStream.class),
+					Mockito.<TypeReference<Map<String, Object>>>any());
 
-			assertThatThrownBy(() -> mapper.mapFormData(SIMPLE_JSON_DATA)).isInstanceOf(TechnicalException.class);
+			assertThatThrownBy(() -> mapper.mapFormData(simpleJsonFile)).isInstanceOf(TechnicalException.class);
 		}
 
 		@Test
 		@SuppressWarnings("unchecked")
 		void shouldContainFormIdentifier() {
-			var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+			var dataMap = mapper.mapFormData(simpleJsonFile);
 
 			assertThat((String) ((Map<String, Object>) dataMap.get(ASSISTANT))
 					.get(IDENTIFIER))
@@ -131,28 +152,28 @@ class FormSolutionsRequestMapperTest {
 		class TestPanels {
 			@Test
 			void shouldContainPanels() {
-				var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+				var dataMap = mapper.mapFormData(simpleJsonFile);
 
 				assertThat(getPanels(dataMap)).isNotNull();
 			}
 
 			@Test
 			void shouldContainPanelIdentifier() {
-				var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+				var dataMap = mapper.mapFormData(simpleJsonFile);
 
 				assertThat(getPanels(dataMap).get(0)).containsEntry(IDENTIFIER, PANEL_ID);
 			}
 
 			@Test
 			void shouldContainPanelComponets() {
-				var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+				var dataMap = mapper.mapFormData(simpleJsonFile);
 
 				assertThat(getPanels(dataMap).get(0).get(COMPONENTS)).isNotNull();
 			}
 
 			@Test
 			void shouldContainTextComponets() {
-				var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+				var dataMap = mapper.mapFormData(simpleJsonFile);
 
 				assertThat(getComponents(dataMap).get(0))
 						.containsEntry(IDENTIFIER, COMPONENT_ID)
@@ -161,7 +182,7 @@ class FormSolutionsRequestMapperTest {
 
 			@Test
 			void shouldContainDateComponets() {
-				var dataMap = mapper.mapFormData(SIMPLE_JSON_DATA);
+				var dataMap = mapper.mapFormData(simpleJsonFile);
 
 				assertThat(getComponents(dataMap).get(1))
 						.containsEntry(IDENTIFIER, DATE_COMPONENT_ID)
@@ -172,14 +193,14 @@ class FormSolutionsRequestMapperTest {
 			class TestNestedPanels {
 				@Test
 				void shouldContainGroup() {
-					var dataMap = mapper.mapFormData(NESTED_COMPONENTS_JSON);
+					var dataMap = mapper.mapFormData(nestedComponenetJsonFile);
 
 					assertThat(getComponents(dataMap).get(0)).containsEntry(IDENTIFIER, OBJEKTGRUPPE_0);
 				}
 
 				@Test
 				void shouldContainDateField() {
-					var dataMap = mapper.mapFormData(NESTED_COMPONENTS_JSON);
+					var dataMap = mapper.mapFormData(nestedComponenetJsonFile);
 
 					assertThat(getNestedComponents(dataMap).get(0))
 							.containsEntry(IDENTIFIER, DATE_COMPONENT_ID)
@@ -210,9 +231,14 @@ class FormSolutionsRequestMapperTest {
 		@Nested
 		class TestMapFiles {
 
-			private File jsonFile = TempFileUtils.writeTmpFile(ATTACHMENTS_JSON);
+			private File jsonFile;
+
+			@BeforeEach
+			void writeJsonFile() {
+				jsonFile = TempFileUtils.writeTmpFile(ATTACHMENTS_JSON);
+			}
 
-			@AfterAll
+			@AfterEach
 			void deleteTempFile() {
 				jsonFile.delete();
 			}
@@ -236,7 +262,7 @@ class FormSolutionsRequestMapperTest {
 			void shouldCallRepresentationMapper() {
 				mapper.mapFiles(FormDataTestFactory.create(), jsonFile);
 
-				verify(representationsMapper).mapRepresentations(Mockito.<Map<String, Object>>any(), jsonFile);
+				verify(representationsMapper).mapRepresentations(Mockito.<Map<String, Object>>any(), eq(jsonFile));
 			}
 
 			@Test
diff --git a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/SendFormEndpointTest.java b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/SendFormEndpointTest.java
index 44bb1e51496903582f8928cd5e37318fb5af3f51..2639fdb6a3f1c4ea642001f007f68f35b87b4ba8 100644
--- a/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/SendFormEndpointTest.java
+++ b/formsolutions-adapter/src/test/java/de/itvsh/kop/eingangsadapter/formsolutions/SendFormEndpointTest.java
@@ -27,10 +27,14 @@ import static org.assertj.core.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
+import java.io.File;
+
 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.ArgumentCaptor;
+import org.mockito.Captor;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.Spy;
@@ -57,6 +61,9 @@ class SendFormEndpointTest {
 
 		private final FormData formData = FormDataTestFactory.create();
 
+		@Captor
+		private ArgumentCaptor<File> fileCaptor;
+
 		private static final Request REQUEST = new Request();
 		static {
 			REQUEST.setJSON(FormSolutionsTestFactory.SIMPLE_JSON_DATA);
@@ -71,7 +78,8 @@ class SendFormEndpointTest {
 		void shouldCallRequestMapper() {
 			receiveForm();
 
-			verify(requestMapper).map(FormSolutionsTestFactory.SIMPLE_JSON_DATA);
+			verify(requestMapper).map(fileCaptor.capture());
+			assertThat(fileCaptor.getValue()).content().isEqualTo(FormSolutionsTestFactory.SIMPLE_JSON_DATA);
 		}
 
 		@Test