diff --git a/src/test/java/de/ozgcloud/admin/common/errorhandling/AdminExceptionHandlerITCase.java b/src/test/java/de/ozgcloud/admin/common/errorhandling/AdminExceptionHandlerITCase.java
index ed27fe464a0b60b2f9e2e191c933f15b3e221c97..6b8a2689e678e217b01252c99a57f248680b67d0 100644
--- a/src/test/java/de/ozgcloud/admin/common/errorhandling/AdminExceptionHandlerITCase.java
+++ b/src/test/java/de/ozgcloud/admin/common/errorhandling/AdminExceptionHandlerITCase.java
@@ -3,12 +3,17 @@ package de.ozgcloud.admin.common.errorhandling;
 import static org.assertj.core.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
-import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.*;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
 
+import java.util.Set;
 import java.util.stream.Stream;
 
+import jakarta.validation.ConstraintViolation;
+import jakarta.validation.ConstraintViolationException;
+import jakarta.validation.Validation;
+import jakarta.validation.Validator;
+
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
@@ -18,7 +23,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.http.HttpStatus;
-import org.springframework.http.MediaType;
 import org.springframework.security.test.context.support.WithMockUser;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.ResultActions;
@@ -67,10 +71,6 @@ public class AdminExceptionHandlerITCase {
 			return AdminExceptionHandler.STATUS_BY_EXCEPTION.entrySet().stream().map(kv -> Arguments.of(kv.getKey(), kv.getValue()));
 		}
 
-		@SneakyThrows
-		private ResultActions performGet() {
-			return mockMvc.perform(get(RootController.PATH));
-		}
 	}
 
 	@Nested
@@ -78,11 +78,26 @@ public class AdminExceptionHandlerITCase {
 		@Test
 		@SneakyThrows
 		void shouldHaveInfoInBody() {
-			var result = mockMvc
-					.perform(post("/api/test-error").content("{ \"string\" : \"\" }").contentType(MediaType.APPLICATION_JSON).with(csrf()));
+			when(modelAssembler.toModel(any())).thenAnswer((a) -> {
+				var validationObject = ValidatedClass.builder().build();
+				throw new ConstraintViolationException(getConstraintViolations(validationObject));
+			});
+
+			var result = performGet();
 
-			assertThat(result.andReturn().getResponse().getContentAsString()).contains("validatedClass.string");
+			assertThat(result.andReturn().getResponse().getContentAsString()).contains("string: Empty field");
 		}
+
+		private <T> Set<ConstraintViolation<T>> getConstraintViolations(T object) {
+			Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
+			return validator.validate(object);
+		}
+
+	}
+
+	@SneakyThrows
+	private ResultActions performGet() {
+		return mockMvc.perform(get(RootController.PATH));
 	}
 
 }
diff --git a/src/test/java/de/ozgcloud/admin/common/errorhandling/HelperService.java b/src/test/java/de/ozgcloud/admin/common/errorhandling/HelperService.java
deleted file mode 100644
index 43847acb229ee1b9d7fb29200fef38da6d170796..0000000000000000000000000000000000000000
--- a/src/test/java/de/ozgcloud/admin/common/errorhandling/HelperService.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package de.ozgcloud.admin.common.errorhandling;
-
-import jakarta.validation.Valid;
-
-import org.springframework.stereotype.Service;
-import org.springframework.validation.annotation.Validated;
-
-@Service
-@Validated
-class HelperService {
-
-	ValidatedClass returnValidObject(@Valid ValidatedClass validatedClass) {
-		return validatedClass;
-	}
-}
diff --git a/src/test/java/de/ozgcloud/admin/common/errorhandling/TestErrorController.java b/src/test/java/de/ozgcloud/admin/common/errorhandling/TestErrorController.java
index c467a2ae83c603c698922da0a46065096a9c5815..c10446041aaba51ac761ac4e91ec01d6f9b7bb4b 100644
--- a/src/test/java/de/ozgcloud/admin/common/errorhandling/TestErrorController.java
+++ b/src/test/java/de/ozgcloud/admin/common/errorhandling/TestErrorController.java
@@ -26,24 +26,18 @@ import java.util.Map;
 
 import jakarta.validation.ConstraintViolationException;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.rest.webmvc.ResourceNotFoundException;
 import org.springframework.security.access.AccessDeniedException;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import de.ozgcloud.common.errorhandling.TechnicalException;
-import io.micrometer.common.lang.NonNullApi;
 
 @RestController
 @RequestMapping("/api/test-error")
 class TestErrorController {
-	@Autowired
-	private HelperService service;
 
 	@FunctionalInterface
 	interface ExceptionProducer {
@@ -66,9 +60,4 @@ class TestErrorController {
 				Class.forName(errorClassName)).produceException();
 	}
 
-	@PostMapping
-	public ValidatedClass postMethodName(@RequestBody ValidatedClass object) {
-		return service.returnValidObject(object);
-	}
-
 }