diff --git a/backend/src/main/java/com/workbenchclassic/UpdateContact.java b/backend/src/main/java/com/workbenchclassic/UpdateContact.java
index 7d2d93d..a4d1743 100644
--- a/backend/src/main/java/com/workbenchclassic/UpdateContact.java
+++ b/backend/src/main/java/com/workbenchclassic/UpdateContact.java
@@ -1,188 +1,188 @@
-package com.workbenchclassic;
-
-import org.json.JSONArray;
-import org.json.JSONObject;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.SQLException;
-import java.util.Map;
-import java.util.stream.Collectors;
-
-import javax.ws.rs.Consumes;
-import javax.ws.rs.POST;
-import javax.ws.rs.Path;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-
-@Path("/updateContacts")
-public class UpdateContact {
-
-    private final DBService dbService = new DBService("dsTranNJTA");
-
-    @POST
-    @Consumes(MediaType.APPLICATION_JSON)
-    @Produces(MediaType.APPLICATION_JSON)
-    public Response doUpdate(String jsonBody) {
-        try {
-            JSONObject json = new JSONObject(jsonBody);
-            String station = json.getString("station");
-            JSONArray dataArray = json.getJSONArray("data");
-
-            String vendor = dbService.getDatabaseProductName();
-            System.out.println("Aktueller DB-Vendor: " + vendor);
-
-            Connection conn = dbService.getConnection();
-            GetMetadata metadata = new GetMetadata();
-            String extPlantResponseString = metadata.getExtPlantJson(station);
-            JSONObject extPlantResponse = new JSONObject(extPlantResponseString);
-
-            String errorCode = extPlantResponse.optString("errorCode", "0");
-            if (!"0".equals(errorCode)) {
-                // Return an HTTP 400 or 500 with that JSON
-                return Response.status(Response.Status.BAD_REQUEST).entity(extPlantResponse.toString()).build();
-            }
-            // 3) werknummer ermitteln
-
-            // werkResultJson könnte z.B. so aussehen:
-            // {"errorCode":"0","errorMessage":"Done","data":"[{\"werknummer\":\"ABC\"}]"}
-
-            String werkData = extPlantResponse.optString("data", "[]");
-            JSONArray werkArr = new JSONArray(werkData);
-
-            String WERK_NR = null;
-            String COMPANY_NO = null;
-            String CLIENT_NO = null;
-            if (werkArr.length() > 0) {
-                JSONObject row = werkArr.getJSONObject(0);
-                WERK_NR = row.optString("ext_company_nr", null);
-                COMPANY_NO = row.optString("werk_nr", null);
-                CLIENT_NO = row.optString("client_nr", null);
-            }
-
-            System.out.println("Ermittelte werknummer: " + COMPANY_NO);
-
-            boolean isMSSQL = "Microsoft SQL Server".equals(vendor);
-            boolean isOracle = "Oracle".equals(vendor);
-
-            insertIdocStatus(conn, isMSSQL, isOracle);
-
-            conn.setAutoCommit(false);
-            try {
-                for (int i = 0; i < dataArray.length(); i++) {
-                    JSONObject obj = dataArray.getJSONObject(i);
-                    Map<String, String> keyMap = obj.keySet().stream()
-                            .collect(Collectors.toMap(String::toLowerCase, key -> key,
-                                    (existing, replacement) -> existing));
-                    insertContact(conn, obj, COMPANY_NO, WERK_NR, CLIENT_NO, isMSSQL, isOracle, keyMap);
-                    if (obj.has("artikel") && !obj.isNull("artikel")
-                            && !String.valueOf(obj.get("artikel")).trim().isEmpty()) {
-                        insertMaterialContact(conn, obj, COMPANY_NO, WERK_NR, CLIENT_NO, isMSSQL, isOracle, keyMap);
-                    }
-
-                }
-                conn.commit();
-            } catch (SQLException e) {
-                conn.rollback();
-                throw e;
-            } finally {
-                conn.setAutoCommit(true);
-                conn.close();
-            }
-
-            JSONObject response = new JSONObject();
-            response.put("status", "ok");
-            response.put("message", "Daten wurden erfolgreich verarbeitet.");
-            return Response.ok(response.toString()).build();
-
-        } catch (Exception e) {
-            e.printStackTrace();
-            JSONObject error = new JSONObject();
-            error.put("status", "error");
-            error.put("message", e.getMessage());
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(error.toString()).build();
-        }
-    }
-
-    private void insertContact(Connection conn, JSONObject obj, String COMPANY_NO, String WERK_NR, String CLIENT_NO,
-            boolean isMSSQL, boolean isOracle, Map<String, String> keyMap) throws SQLException {
-        String sql;
-        if (isMSSQL) {
-            sql = "INSERT INTO xtran.tran_contact (TRAN_ID, IDOC_ID, SOURCE, STATUS, CREATED, STAMP, PLANT_NO, CLIENT_NO, COMPANY_NO, CONTACT_CODE, CONTACT_NAME, CONTACT_GROUP, STREET, ZIP_CODE, COUNTRY, CITY, IS_SUPPLIER, IS_CUSTOMER, IS_MANUFACTURER, CONTACT_CODE_ERP, INVENTORY, CONTACT_STATE, LATITUDE, LONGITUDE) "
-                    + "VALUES (NEXT VALUE FOR xtran.SEQ_tran_contact, (SELECT MAX(id) FROM xtran.tran_idocstatus), ?, ?, GETDATE(), GETDATE(), ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
-        } else if (isOracle) {
-            sql = "INSERT INTO tran.tran_contact (TRAN_ID, IDOC_ID, SOURCE, STATUS, CREATED, STAMP, PLANT_NO, CLIENT_NO, COMPANY_NO, CONTACT_CODE, CONTACT_NAME, CONTACT_GROUP, STREET, ZIP_CODE, COUNTRY, CITY, IS_SUPPLIER, IS_CUSTOMER, IS_MANUFACTURER, CONTACT_CODE_ERP, INVENTORY, CONTACT_STATE, LATITUDE, LONGITUDE) "
-                    + "VALUES (tran.SEQ_TRAN_contact.nextVal, (SELECT MAX(id) FROM tran.tran_idocstatus), ?, ?, SYSDATE, SYSDATE, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
-        } else {
-            throw new SQLException("DB-Vendor nicht implementiert");
-        }
-
-        try (PreparedStatement ps = conn.prepareStatement(sql)) {
-            ps.setInt(1, obj.optInt(keyMap.getOrDefault("source", "source"), 0));
-            ps.setInt(2, obj.optInt(keyMap.getOrDefault("status", "status"), 0));
-            ps.setString(3, WERK_NR);
-            ps.setString(4, CLIENT_NO);
-            ps.setString(5, COMPANY_NO);
-            ps.setString(6, obj.optString(keyMap.getOrDefault("contact_code", "contact_code"), ""));
-            ps.setString(7, obj.optString(keyMap.getOrDefault("contact_name", "contact_name"), ""));
-            ps.setString(8, obj.optString(keyMap.getOrDefault("contact_group", "contact_group"), ""));
-            ps.setString(9, obj.optString(keyMap.getOrDefault("street", "street"), ""));
-            ps.setString(10, obj.optString(keyMap.getOrDefault("zip_code", "zip_code"), ""));
-            ps.setString(11, obj.optString(keyMap.getOrDefault("country", "country"), ""));
-            ps.setString(12, obj.optString(keyMap.getOrDefault("city", "city"), ""));
-            ps.setInt(13, obj.optInt(keyMap.getOrDefault("is_supplier", "is_supplier"), 0));
-            ps.setInt(14, obj.optInt(keyMap.getOrDefault("is_customer", "is_customer"), 0));
-            ps.setInt(15, obj.optInt(keyMap.getOrDefault("is_manufacturer", "is_manufacturer"), 0));
-            ps.setString(16, obj.optString(keyMap.getOrDefault("contact_code_erp", "contact_code_erp"), ""));
-            ps.setInt(17, obj.optInt(keyMap.getOrDefault("inventory", "inventory"), 0));
-            ps.setInt(18, obj.optInt(keyMap.getOrDefault("contact_state", "contact_state"), 0));
-            ps.setDouble(19, obj.optDouble(keyMap.getOrDefault("latitude", "latitude"), 0.0));
-            ps.setDouble(20, obj.optDouble(keyMap.getOrDefault("longitude", "longitude"), 0.0));
-            ps.executeUpdate();
-        }
-    }
-
-    private void insertIdocStatus(Connection conn, boolean isMSSQL, boolean isOracle) throws SQLException {
-        String sql;
-        if (isMSSQL) {
-            sql = "INSERT INTO xtran.tran_idocstatus (ID, DATE_CREATION, ewstatus, errorcode, content_type, source) VALUES (NEXT VALUE FOR xtran.seq_tranidocstatus, GETDATE(), 1, 0, 57, 0)";
-        } else if (isOracle) {
-            sql = "INSERT INTO tran.tran_idocstatus (ID, DATE_CREATION, ewstatus, errorcode, content_type, source) VALUES (tran.seq_tranidocstatus.nextval, SYSDATE, 1, 0, 57, 0)";
-        } else {
-            throw new SQLException("DB-Vendor nicht implementiert");
-        }
-        try (PreparedStatement ps = conn.prepareStatement(sql)) {
-            ps.executeUpdate();
-        }
-    }
-
-    private void insertMaterialContact(Connection conn, JSONObject obj, String COMPANY_NO, String WERK_NR,
-            String CLIENT_NO, boolean isMSSQL, boolean isOracle, Map<String, String> keyMap) throws SQLException {
-        String sql;
-        if (isMSSQL) {
-            sql = "INSERT INTO xtran.tran_material_contact (TRAN_ID, SOURCE, STATUS, CREATED, STAMP, CONTACT_CODE, MATERIAL_NO, MATERIAL_NO_EXT, MATERIAL_DESC_EXT, CONTACT_TYPE, DELETE_FLAG, PLANT_NO, COMPANY_NO, CLIENT_NO, IDOC_ID) "
-                    + "VALUES (NEXT VALUE FOR xtran.SEQ_tran_material_contact, ?, ?, GETDATE(), GETDATE(), ?, ?, ?, ?, ?, ?, ?, ?, ?, (SELECT MAX(id) FROM xtran.tran_idocstatus))";
-        } else if (isOracle) {
-            sql = "INSERT INTO tran.tran_material_contact (TRAN_ID, SOURCE, STATUS, CREATED, STAMP, CONTACT_CODE, MATERIAL_NO, MATERIAL_NO_EXT, MATERIAL_DESC_EXT, CONTACT_TYPE, DELETE_FLAG, PLANT_NO, COMPANY_NO, CLIENT_NO, IDOC_ID) "
-                    + "VALUES (tran.SEQ_TRAN_material_contact.nextVal, ?, ?, SYSDATE, SYSDATE, ?, ?, ?, ?, ?, ?, ?, ?, ?, (SELECT MAX(id) FROM tran.tran_idocstatus))";
-        } else {
-            throw new SQLException("DB-Vendor nicht implementiert");
-        }
-
-        try (PreparedStatement ps = conn.prepareStatement(sql)) {
-            ps.setInt(1, obj.optInt(keyMap.getOrDefault("source", "source"), 0));
-            ps.setInt(2, obj.optInt(keyMap.getOrDefault("status", "status"), 0));
-            ps.setString(3, obj.optString(keyMap.getOrDefault("contact_code", "contact_code"), ""));
-            ps.setString(4, obj.optString(keyMap.getOrDefault("artikel", "artikel"), ""));
-            ps.setString(5, obj.optString(keyMap.getOrDefault("part_ext", "part_ext"), ""));
-            ps.setString(6, obj.optString(keyMap.getOrDefault("part_ext", "material_desc_ext"), ""));
-            ps.setInt(7, obj.optInt(keyMap.getOrDefault("art_bez_ext", "art_bez_ext"), 0));
-            ps.setInt(8, obj.optInt(keyMap.getOrDefault("delete_flag", "delete_flag"), 0));
-            ps.setString(9, WERK_NR);
-            ps.setString(10, COMPANY_NO);
-            ps.setString(11, CLIENT_NO);
-            ps.executeUpdate();
-        }
-    }
-}
+package com.workbenchclassic;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+@Path("/updateContacts")
+public class UpdateContact {
+
+    private final DBService dbService = new DBService("dsTranNJTA");
+
+    @POST
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response doUpdate(String jsonBody) {
+        try {
+            JSONObject json = new JSONObject(jsonBody);
+            String station = json.getString("station");
+            JSONArray dataArray = json.getJSONArray("data");
+
+            String vendor = dbService.getDatabaseProductName();
+            System.out.println("Aktueller DB-Vendor: " + vendor);
+
+            Connection conn = dbService.getConnection();
+            GetMetadata metadata = new GetMetadata();
+            String extPlantResponseString = metadata.getExtPlantJson(station);
+            JSONObject extPlantResponse = new JSONObject(extPlantResponseString);
+
+            String errorCode = extPlantResponse.optString("errorCode", "0");
+            if (!"0".equals(errorCode)) {
+                // Return an HTTP 400 or 500 with that JSON
+                return Response.status(Response.Status.BAD_REQUEST).entity(extPlantResponse.toString()).build();
+            }
+            // 3) werknummer ermitteln
+
+            // werkResultJson könnte z.B. so aussehen:
+            // {"errorCode":"0","errorMessage":"Done","data":"[{\"werknummer\":\"ABC\"}]"}
+
+            String werkData = extPlantResponse.optString("data", "[]");
+            JSONArray werkArr = new JSONArray(werkData);
+
+            String WERK_NR = null;
+            String COMPANY_NO = null;
+            String CLIENT_NO = null;
+            if (werkArr.length() > 0) {
+                JSONObject row = werkArr.getJSONObject(0);
+                WERK_NR = row.optString("werk_nr", null);
+                COMPANY_NO = row.optString("ext_company_nr", null);
+                CLIENT_NO = row.optString("client_nr", null);
+            }
+
+            System.out.println("Ermittelte werknummer: " + COMPANY_NO);
+
+            boolean isMSSQL = "Microsoft SQL Server".equals(vendor);
+            boolean isOracle = "Oracle".equals(vendor);
+
+            insertIdocStatus(conn, isMSSQL, isOracle);
+
+            conn.setAutoCommit(false);
+            try {
+                for (int i = 0; i < dataArray.length(); i++) {
+                    JSONObject obj = dataArray.getJSONObject(i);
+                    Map<String, String> keyMap = obj.keySet().stream()
+                            .collect(Collectors.toMap(String::toLowerCase, key -> key,
+                                    (existing, replacement) -> existing));
+                    insertContact(conn, obj, COMPANY_NO, WERK_NR, CLIENT_NO, isMSSQL, isOracle, keyMap);
+                    if (obj.has("artikel") && !obj.isNull("artikel")
+                            && !String.valueOf(obj.get("artikel")).trim().isEmpty()) {
+                        insertMaterialContact(conn, obj, COMPANY_NO, WERK_NR, CLIENT_NO, isMSSQL, isOracle, keyMap);
+                    }
+
+                }
+                conn.commit();
+            } catch (SQLException e) {
+                conn.rollback();
+                throw e;
+            } finally {
+                conn.setAutoCommit(true);
+                conn.close();
+            }
+
+            JSONObject response = new JSONObject();
+            response.put("status", "ok");
+            response.put("message", "Daten wurden erfolgreich verarbeitet.");
+            return Response.ok(response.toString()).build();
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            JSONObject error = new JSONObject();
+            error.put("status", "error");
+            error.put("message", e.getMessage());
+            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(error.toString()).build();
+        }
+    }
+
+    private void insertContact(Connection conn, JSONObject obj, String COMPANY_NO, String WERK_NR, String CLIENT_NO,
+            boolean isMSSQL, boolean isOracle, Map<String, String> keyMap) throws SQLException {
+        String sql;
+        if (isMSSQL) {
+            sql = "INSERT INTO xtran.tran_contact (TRAN_ID, IDOC_ID, SOURCE, STATUS, CREATED, STAMP, PLANT_NO, CLIENT_NO, COMPANY_NO, CONTACT_CODE, CONTACT_NAME, CONTACT_GROUP, STREET, ZIP_CODE, COUNTRY, CITY, IS_SUPPLIER, IS_CUSTOMER, IS_MANUFACTURER, CONTACT_CODE_ERP, INVENTORY, CONTACT_STATE, LATITUDE, LONGITUDE) "
+                    + "VALUES (NEXT VALUE FOR xtran.SEQ_tran_contact, (SELECT MAX(id) FROM xtran.tran_idocstatus), ?, ?, GETDATE(), GETDATE(), ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
+        } else if (isOracle) {
+            sql = "INSERT INTO tran.tran_contact (TRAN_ID, IDOC_ID, SOURCE, STATUS, CREATED, STAMP, PLANT_NO, CLIENT_NO, COMPANY_NO, CONTACT_CODE, CONTACT_NAME, CONTACT_GROUP, STREET, ZIP_CODE, COUNTRY, CITY, IS_SUPPLIER, IS_CUSTOMER, IS_MANUFACTURER, CONTACT_CODE_ERP, INVENTORY, CONTACT_STATE, LATITUDE, LONGITUDE) "
+                    + "VALUES (tran.SEQ_TRAN_contact.nextVal, (SELECT MAX(id) FROM tran.tran_idocstatus), ?, ?, SYSDATE, SYSDATE, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
+        } else {
+            throw new SQLException("DB-Vendor nicht implementiert");
+        }
+
+        try (PreparedStatement ps = conn.prepareStatement(sql)) {
+            ps.setInt(1, obj.optInt(keyMap.getOrDefault("source", "source"), 0));
+            ps.setInt(2, obj.optInt(keyMap.getOrDefault("status", "status"), 0));
+            ps.setString(3, WERK_NR);
+            ps.setString(4, CLIENT_NO);
+            ps.setString(5, COMPANY_NO);
+            ps.setString(6, obj.optString(keyMap.getOrDefault("contact_code", "contact_code"), ""));
+            ps.setString(7, obj.optString(keyMap.getOrDefault("contact_name", "contact_name"), ""));
+            ps.setString(8, obj.optString(keyMap.getOrDefault("contact_group", "contact_group"), ""));
+            ps.setString(9, obj.optString(keyMap.getOrDefault("street", "street"), ""));
+            ps.setString(10, obj.optString(keyMap.getOrDefault("zip_code", "zip_code"), ""));
+            ps.setString(11, obj.optString(keyMap.getOrDefault("country", "country"), ""));
+            ps.setString(12, obj.optString(keyMap.getOrDefault("city", "city"), ""));
+            ps.setInt(13, obj.optInt(keyMap.getOrDefault("is_supplier", "is_supplier"), 0));
+            ps.setInt(14, obj.optInt(keyMap.getOrDefault("is_customer", "is_customer"), 0));
+            ps.setInt(15, obj.optInt(keyMap.getOrDefault("is_manufacturer", "is_manufacturer"), 0));
+            ps.setString(16, obj.optString(keyMap.getOrDefault("contact_code_erp", "contact_code_erp"), ""));
+            ps.setInt(17, obj.optInt(keyMap.getOrDefault("inventory", "inventory"), 0));
+            ps.setInt(18, obj.optInt(keyMap.getOrDefault("contact_state", "contact_state"), 0));
+            ps.setDouble(19, obj.optDouble(keyMap.getOrDefault("latitude", "latitude"), 0.0));
+            ps.setDouble(20, obj.optDouble(keyMap.getOrDefault("longitude", "longitude"), 0.0));
+            ps.executeUpdate();
+        }
+    }
+
+    private void insertIdocStatus(Connection conn, boolean isMSSQL, boolean isOracle) throws SQLException {
+        String sql;
+        if (isMSSQL) {
+            sql = "INSERT INTO xtran.tran_idocstatus (ID, DATE_CREATION, ewstatus, errorcode, content_type, source) VALUES (NEXT VALUE FOR xtran.seq_tranidocstatus, GETDATE(), 1, 0, 57, 0)";
+        } else if (isOracle) {
+            sql = "INSERT INTO tran.tran_idocstatus (ID, DATE_CREATION, ewstatus, errorcode, content_type, source) VALUES (tran.seq_tranidocstatus.nextval, SYSDATE, 1, 0, 57, 0)";
+        } else {
+            throw new SQLException("DB-Vendor nicht implementiert");
+        }
+        try (PreparedStatement ps = conn.prepareStatement(sql)) {
+            ps.executeUpdate();
+        }
+    }
+
+    private void insertMaterialContact(Connection conn, JSONObject obj, String COMPANY_NO, String WERK_NR,
+            String CLIENT_NO, boolean isMSSQL, boolean isOracle, Map<String, String> keyMap) throws SQLException {
+        String sql;
+        if (isMSSQL) {
+            sql = "INSERT INTO xtran.tran_material_contact (TRAN_ID, SOURCE, STATUS, CREATED, STAMP, CONTACT_CODE, MATERIAL_NO, MATERIAL_NO_EXT, MATERIAL_DESC_EXT, CONTACT_TYPE, DELETE_FLAG, PLANT_NO, COMPANY_NO, CLIENT_NO, IDOC_ID) "
+                    + "VALUES (NEXT VALUE FOR xtran.SEQ_tran_material_contact, ?, ?, GETDATE(), GETDATE(), ?, ?, ?, ?, ?, ?, ?, ?, ?, (SELECT MAX(id) FROM xtran.tran_idocstatus))";
+        } else if (isOracle) {
+            sql = "INSERT INTO tran.tran_material_contact (TRAN_ID, SOURCE, STATUS, CREATED, STAMP, CONTACT_CODE, MATERIAL_NO, MATERIAL_NO_EXT, MATERIAL_DESC_EXT, CONTACT_TYPE, DELETE_FLAG, PLANT_NO, COMPANY_NO, CLIENT_NO, IDOC_ID) "
+                    + "VALUES (tran.SEQ_TRAN_material_contact.nextVal, ?, ?, SYSDATE, SYSDATE, ?, ?, ?, ?, ?, ?, ?, ?, ?, (SELECT MAX(id) FROM tran.tran_idocstatus))";
+        } else {
+            throw new SQLException("DB-Vendor nicht implementiert");
+        }
+
+        try (PreparedStatement ps = conn.prepareStatement(sql)) {
+            ps.setInt(1, obj.optInt(keyMap.getOrDefault("source", "source"), 0));
+            ps.setInt(2, obj.optInt(keyMap.getOrDefault("status", "status"), 0));
+            ps.setString(3, obj.optString(keyMap.getOrDefault("contact_code", "contact_code"), ""));
+            ps.setString(4, obj.optString(keyMap.getOrDefault("artikel", "artikel"), ""));
+            ps.setString(5, obj.optString(keyMap.getOrDefault("part_ext", "part_ext"), ""));
+            ps.setString(6, obj.optString(keyMap.getOrDefault("part_ext", "material_desc_ext"), ""));
+            ps.setInt(7, obj.optInt(keyMap.getOrDefault("art_bez_ext", "art_bez_ext"), 0));
+            ps.setInt(8, obj.optInt(keyMap.getOrDefault("delete_flag", "delete_flag"), 0));
+            ps.setString(9, WERK_NR);
+            ps.setString(10, COMPANY_NO);
+            ps.setString(11, CLIENT_NO);
+            ps.executeUpdate();
+        }
+    }
+}