diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/AntragstellerMapper.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/AntragstellerMapper.java
index 9dfc1519007b4f0bd2807f90cda31413ae8a28d9..0c65466d79e1fdb5f0f5e5472fbd2bed4b013536 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/AntragstellerMapper.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/AntragstellerMapper.java
@@ -33,7 +33,7 @@ class AntragstellerMapper implements FimEngineBasedMapper {
 	}
 
 	Map<String, Object> getAntragsteller(Map<String, Object> formData) {
-		return FimDataUtil.getSubmap(formData, ANTRAGSTELLER_KEY);
+		return FimDataUtil.getValueMapByKey(formData, ANTRAGSTELLER_KEY);
 	}
 
 	Antragsteller mapAntragsteller(Map<String, Object> antragsteller) {
@@ -51,6 +51,6 @@ class AntragstellerMapper implements FimEngineBasedMapper {
 	}
 
 	private Map<String, Object> getAnschrift(Map<String, Object> antragsteller) {
-		return FimDataUtil.getSubmap(antragsteller, ANSCHRIFT_KEY);
+		return FimDataUtil.getValueMapByKey(antragsteller, ANSCHRIFT_KEY);
 	}
 }
\ No newline at end of file
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimBasedAdapter.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimBasedAdapter.java
index b6d20b0c80782e4ed3f1e6cfef3b8f213ef01bde..296f4efff44fbbbe24eb898d644164db9c029a42 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimBasedAdapter.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimBasedAdapter.java
@@ -75,7 +75,7 @@ public class FimBasedAdapter implements EngineBasedSemantikAdapter {
 			return processData(DocumentHelper.parse(file.getContentStream()));
 		} catch (Exception e) {
 			LOG.warn("Error on parsing Document.", e);
-			return Collections.<String, Object>emptyMap();
+			return Collections.emptyMap();
 		}
 	}
 
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDataUtil.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDataUtil.java
index 6d932ed9ee5642ad0010892cc2e5dc7f116124e0..6d527356735d785b8f113da8d22473e8d200611c 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDataUtil.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDataUtil.java
@@ -1,12 +1,11 @@
 package de.ozgcloud.eingang.fim;
 
-import java.util.Arrays;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
 
 import org.apache.commons.collections4.MapUtils;
-import org.apache.commons.lang3.ArrayUtils;
 
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
@@ -16,16 +15,20 @@ class FimDataUtil {
 
 	static final String VALUE_KEY = "value";
 
-	public static Optional<String> getValue(Map<String, Object> data, String key, String... path) {
-		var current = FimDataUtil.getSubmap(data, ArrayUtils.subarray(path, 0, path.length));
+	public static Optional<String> getValue(Map<String, Object> data, List<String> pathKeys, String key) {
+		var current = FimDataUtil.getSubmap(data, pathKeys);
 		if (Objects.isNull(current)) {
 			return Optional.empty();
 		}
 		return FimDataUtil.getValueByKey(current, key);
 	}
 
-	public static Map<String, Object> getSubmap(Map<String, Object> data, String... path) {
-		return Arrays.stream(path).reduce(data, FimDataUtil::getValueMapByKey, (accumulator, combiner) -> combiner);
+	private static Map<String, Object> getSubmap(Map<String, Object> data, List<String> pathKeys) {
+		var current = data;
+		for (var pathKey : pathKeys) {
+			current = FimDataUtil.getValueMapByKey(current, pathKey);
+		}
+		return current;
 	}
 
 	static Map<String, Object> getValueMapByKey(Map<String, Object> obj, String key) {
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDocumentReader.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDocumentReader.java
index c629f7dd8d0ccc88aa4dfa3ad280b14399d79e84..de7e3961ccb4ae9b99eedf79c8c25beccc4d4abb 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDocumentReader.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimDocumentReader.java
@@ -65,7 +65,7 @@ class FimDocumentHelper {
 		}
 
 		private Map<String, Object> buildFieldMap(String fieldName, Object obj) {
-			return Map.<String, Object>of(LABEL_KEY, fieldName, VALUE_KEY, obj);
+			return Map.of(LABEL_KEY, fieldName, VALUE_KEY, obj);
 		}
 	}
 }
\ No newline at end of file
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimSchemeAdapter.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimSchemeAdapter.java
index 0886cc943962e25b02739688a1c4449d42788bcd..e7cece5c74865223a9ffb491cc856b505f2c42c9 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimSchemeAdapter.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimSchemeAdapter.java
@@ -40,7 +40,7 @@ public abstract class FimSchemeAdapter {
 		var fieldNameWithoutNamespace = DocumentHelper.getFieldNameWithoutNamespace(fieldName);
 
 		if (!fieldIndex.containsKey(fieldNameWithoutNamespace)) {
-			LOG.error("Cannot find Field: " + fieldName);
+			LOG.error("Cannot find Field: {}", fieldName);
 			return Optional.empty();
 		}
 		return getNameForElement(fieldIndex.get(fieldNameWithoutNamespace));
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimService.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimService.java
index 24693d0fea81de1e61481da1bd46e32859e2a5f0..436b4cf677b40d547fc3b37d691a65312ee30b4d 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimService.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/FimService.java
@@ -68,7 +68,7 @@ public class FimService {
 		var fimScheme = schemeHelper.getScheme(fimSchemaName);
 
 		if (Objects.isNull(fimScheme)) {
-			LOG.error("Cannot find schema for: " + fimSchemaName);
+			LOG.error("Cannot find schema for: {}", fimSchemaName);
 			return schemeHelper.getDefaultScheme();
 		}
 		return fimScheme;
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/HeaderMapper.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/HeaderMapper.java
index 9309107809f45f4e177f440b4647df4120675e2c..63befb6637b368805c57cfe354df8d4974ad74ba 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/HeaderMapper.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/HeaderMapper.java
@@ -1,5 +1,6 @@
 package de.ozgcloud.eingang.fim;
 
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
@@ -22,7 +23,7 @@ class HeaderMapper implements FimEngineBasedMapper {
 	}
 
 	Optional<String> getFormName(Map<String, Object> formData) {
-		return FimDataUtil.getValue(formData, FORM_NAME_KEY, "G17003529", "G05001479", "G05001480");
+		return FimDataUtil.getValue(formData, List.of("G17003529", "G05001479", "G05001480"), FORM_NAME_KEY);
 	}
 
 	private FormData addFormName(FormData formData, String formName) {
diff --git a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/common/xml/DocumentHelper.java b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/common/xml/DocumentHelper.java
index 0e410f64de2854a09777ef948e7cd9417a2e2581..2368cd4ddd96ed23fe11e3c8553391d78fd19e22 100644
--- a/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/common/xml/DocumentHelper.java
+++ b/fim-adapter/src/main/java/de/ozgcloud/eingang/fim/common/xml/DocumentHelper.java
@@ -50,8 +50,8 @@ public class DocumentHelper {
 				.map(Element.class::cast);
 	}
 
-	public static boolean isTextNode(Node child) {
-		return child.getChildNodes().getLength() == 1 && child.getChildNodes().item(0) instanceof Text;
+	public static boolean isTextNode(Node node) {
+		return node.getChildNodes().getLength() == 1 && node.getChildNodes().item(0) instanceof Text;
 	}
 
 	public static String getFieldNameWithoutNamespace(String nodeName) {
diff --git a/fim-adapter/src/test/java/de/ozgcloud/eingang/fim/HeaderMapperTest.java b/fim-adapter/src/test/java/de/ozgcloud/eingang/fim/HeaderMapperTest.java
index f44c281882ae7a26d33fa4690e42c22fe801950b..eef87830a7eaa9b3760d037b07cb9d24dc692315 100644
--- a/fim-adapter/src/test/java/de/ozgcloud/eingang/fim/HeaderMapperTest.java
+++ b/fim-adapter/src/test/java/de/ozgcloud/eingang/fim/HeaderMapperTest.java
@@ -4,6 +4,7 @@ import static org.assertj.core.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
+import java.util.List;
 import java.util.Optional;
 
 import org.junit.jupiter.api.BeforeEach;
@@ -82,14 +83,15 @@ class HeaderMapperTest {
 				mapper.getFormName(FormDataTestFactory.FORM_DATA);
 
 				helper.verify(
-						() -> FimDataUtil.getValue(FormDataTestFactory.FORM_DATA, HeaderMapper.FORM_NAME_KEY, "G17003529", "G05001479", "G05001480"));
+						() -> FimDataUtil.getValue(FormDataTestFactory.FORM_DATA, List.of("G17003529", "G05001479", "G05001480"),
+								HeaderMapper.FORM_NAME_KEY));
 			}
 		}
 
 		@Test
 		void shouldReturnValue() {
 			try (var helper = mockStatic(FimDataUtil.class)) {
-				helper.when(() -> FimDataUtil.getValue(any(), any(), any(), any(), any())).thenReturn(Optional.of(FormHeaderTestFactory.FORM_NAME));
+				helper.when(() -> FimDataUtil.getValue(any(), any(), any())).thenReturn(Optional.of(FormHeaderTestFactory.FORM_NAME));
 
 				var formNameOpt = mapper.getFormName(FormDataTestFactory.FORM_DATA);