diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..609ddd4
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,12 @@
+{
+  // Wildfly Debug Configuration
+  "configurations": [
+    {
+      "type": "java",
+      "name": "Debug Wildfly",
+      "request": "attach",
+      "hostName": "localhost",
+      "port": "8787"
+    }
+]
+}
diff --git a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoiceUtil.java b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoiceUtil.java
index bb4bd81..d0acc54 100644
--- a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoiceUtil.java
+++ b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoiceUtil.java
@@ -1,10 +1,28 @@
 package com.alexanderlogistics;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+/**
+ * Rundungs Methode
+ * 
+ * See: https://stackoverflow.com/questions/2808535/round-a-double-to-2-decimal-places
+ * 
+ * @author rsoika
+ *
+ */
 public class InvoiceUtil {
-    
+
     public static double round(double value) {
+        BigDecimal bd = BigDecimal.valueOf(value);
+        bd = bd.setScale(2, RoundingMode.HALF_UP);
+        return bd.doubleValue();
+    }
+    
+    @Deprecated
+    public static double roundConservative(double value) {
         value = value * 100;
         long tmp = Math.round(value);
         return (double) tmp / 100;
     }
+
 }
diff --git a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/ZahlungseingangSaldoAdapter.java b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/ZahlungseingangSaldoAdapter.java
index c847f79..f4cdea6 100644
--- a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/ZahlungseingangSaldoAdapter.java
+++ b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/ZahlungseingangSaldoAdapter.java
@@ -89,7 +89,6 @@ public class ZahlungseingangSaldoAdapter implements SignalAdapter {
                         ZahlungseingangService.ERROR_PAYMENT_BOOKING_FAILED,
                         "Der Zahlungseingang ist nicht identisch mit den ausgebuchten Rechnungssalden. Sollte die Eingabe korrekt sein, wiederholen Sie die Aktion.");
             }
-
         }
 
       
@@ -127,7 +126,7 @@ public class ZahlungseingangSaldoAdapter implements SignalAdapter {
                 
             
                 // vergeiche Restsaldo mit payment für diese Rechnung
-                if (Math.abs(invoicePaymentAmount) > Math.abs(InvoiceUtil.round(invoiceSaldo))) {
+                if (Math.abs(InvoiceUtil.round(invoicePaymentAmount)) > Math.abs(InvoiceUtil.round(invoiceSaldo))) {
                     throw new PluginException(PluginException.class.getName(),
                             ZahlungseingangService.ERROR_PAYMENT_BOOKING_FAILED,
                             "Der Zahlungseingang kann nicht verbucht werden, da der Restsaldo der Rechnung "
@@ -138,7 +137,7 @@ public class ZahlungseingangSaldoAdapter implements SignalAdapter {
                 invoiceSaldo = invoiceSaldo - invoicePaymentAmount;
                 
                
-
+                invoiceSaldo=(float) InvoiceUtil.round(invoiceSaldo);
                 invoice.setItemValue("invoice.saldo", invoiceSaldo);
                 invoice.event(ZahlungseingangService.EVENT_UPDATE_INVOICE);
                 zahlungseingangService.processInvoice(invoice);
diff --git a/office-alexander-logistics-app/src/test/java/com/alexanderlogistics/TestRunden.java b/office-alexander-logistics-app/src/test/java/com/alexanderlogistics/TestRunden.java
new file mode 100644
index 0000000..091c591
--- /dev/null
+++ b/office-alexander-logistics-app/src/test/java/com/alexanderlogistics/TestRunden.java
@@ -0,0 +1,54 @@
+package com.alexanderlogistics;
+
+import java.text.DateFormat;
+import java.text.DecimalFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.logging.Logger;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.imixs.workflow.datev.imports.DatevImportAdapter;
+import org.junit.Before;
+import org.junit.Test;
+
+import junit.framework.Assert;
+
+/**
+ * This test generates random test data
+ * 
+ * @author rsoika
+ * 
+ */
+public class TestRunden {
+
+    public static DateFormat dateFormat = new SimpleDateFormat("ddMMyyyy");
+    public static DecimalFormat decimalFormat = new DecimalFormat("0.00");
+    public static DecimalFormat rateFormat = new DecimalFormat("0.000000");
+
+    private final static Logger logger = Logger.getLogger(TestFormat.class.getName());
+
+    @Before
+    public void setUp() throws Exception {
+
+    }
+
+    @Test
+    public void testBetrag() {
+        double d1 = 915.1400000000001;
+        double d2 = 915.1400000000002;
+
+        logger.info("d1="+d1);
+        logger.info("d2="+d2);
+
+        logger.info("d1="+InvoiceUtil.round(d1));
+        logger.info("d2="+InvoiceUtil.round(d2));
+
+         if (Math.abs(InvoiceUtil.round(d1)) > Math.abs(InvoiceUtil.round(d2))) {
+             Assert.fail();
+         }
+        logger.info("Test erfolgreich");
+    }
+    
+}