diff --git a/office-alexander-logistics-app/pom.xml b/office-alexander-logistics-app/pom.xml
index b4a5edd..eef04ef 100644
--- a/office-alexander-logistics-app/pom.xml
+++ b/office-alexander-logistics-app/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>office-alexander-logistics</artifactId>
 		<groupId>com.alexander-logistics</groupId>
-		<version>1.1.0</version>
+		<version>1.1.1</version>
 	</parent>
 	<artifactId>office-alexander-logistics-app</artifactId>
 	<packaging>war</packaging>
diff --git a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoicePlugin.java b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoicePlugin.java
index ba64fed..31c9501 100644
--- a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoicePlugin.java
+++ b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/InvoicePlugin.java
@@ -43,7 +43,6 @@ public class InvoicePlugin extends AbstractPlugin {
     // XX-YYY-####-###
     public static final String REGEX_POSNUMER = "([A-Z]{2}-[A-Z]{3}-[0-9]{4}-[0-9]{3})";
 
-    @SuppressWarnings("unused")
     private static Logger logger = Logger.getLogger(InvoicePlugin.class.getName());
 
     /**
@@ -74,13 +73,15 @@ public class InvoicePlugin extends AbstractPlugin {
                         "Eingabefehler - Bitte wählen Sie eine Zahlungsart aus!");
             }
             // doppelte Rechnungsnummer prüfen
-            if (workitem.getTaskID() == TASK_ERFASSUNG ) {
+            if (workitem.getTaskID() == TASK_ERFASSUNG) {
                 validateInvoiceNumber(workitem);
             }
 
             if (workitem.getTaskID() == TASK_ERFASSUNG || workitem.getTaskID() == TASK_SACHPRUEFUNG) {
                 // Buchungsperiode auf plausi prüfen
-                validateBuchungsperiode(workitem);
+                if ("workitem".equals(workitem.getType())) {
+                    validateBuchungsperiode(workitem.getItemValueString("invoice.period"));
+                }
                 // Cargosoft Kreditorennnummer prüfen
                 validateCargosoftCdtrNumber(workitem);
             }
@@ -126,6 +127,12 @@ public class InvoicePlugin extends AbstractPlugin {
                             "Eingabefehler - Der Nettobetrag in  in Zeile " + posItem.getItemValueString("numpos")
                                     + " darf nicht 0 sein!");
                 }
+                
+                // Buchunsperiode
+                if (!posItem.getItemValueString("invoice.period").trim().isEmpty()) {
+                    validateBuchungsperiode(posItem.getItemValueString("invoice.period"));
+                    
+                }
             }
         }
 
@@ -142,10 +149,10 @@ public class InvoicePlugin extends AbstractPlugin {
      * @param workitem
      * @throws PluginException
      */
-    private void validateBuchungsperiode(ItemCollection workitem) throws PluginException {
-        String period = workitem.getItemValueString("invoice.period");
+    private void validateBuchungsperiode(String period) throws PluginException {
+
         // buchungsperionde nur prüfen wenn noch nicht archiviert
-        if (!period.isEmpty() && "workitem".equals(workitem.getType())) {
+        if (!period.isEmpty()) {
             LocalDate localDate = LocalDate.now();
             int year = localDate.getYear();
             // build regex....
@@ -217,6 +224,13 @@ public class InvoicePlugin extends AbstractPlugin {
         }
     }
 
+    /**
+     * Hilfsmethod prüft ob die cdtr.nummer mit einer nummer aus der Cargosoft
+     * Import Datei übereinstimmt.
+     * 
+     * @param workitem
+     * @throws PluginException
+     */
     private void validateCargosoftCdtrNumber(ItemCollection workitem) throws PluginException {
         String crdtrNumber = workitem.getItemValueString("cdtr.number");
 
@@ -249,7 +263,7 @@ public class InvoicePlugin extends AbstractPlugin {
      * converts the Map List of a workitem into a List of ItemCollectons
      */
     @SuppressWarnings({ "rawtypes", "unchecked" })
-    protected List<ItemCollection> explodeChildList(ItemCollection workitem) {
+    protected static List<ItemCollection> explodeChildList(ItemCollection workitem) {
         // convert current list of childItems into ItemCollection elements
         ArrayList<ItemCollection> childItems = new ArrayList<ItemCollection>();
 
diff --git a/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml b/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml
index 1159ac5..29325e9 100644
--- a/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml
+++ b/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml
@@ -20,6 +20,8 @@
 							*</span></th>
 					<th style="width: 100px;">Leistungsart<span
 						class="imixs-required"> *</span></th>
+					<th style="width: 80px;">BP<span
+						class="imixs-required"> *</span></th>
 					<th style="width: 150px; text-align: right;">Netto</th>
 					<th style="width: 150px; text-align: right;">Brutto</th>
 					<th style="">
@@ -71,6 +73,13 @@
 								<f:selectItem itemLabel="Zoll" itemValue="Zoll"></f:selectItem>
 							</h:selectOneMenu></td>
 
+
+						<!-- Buchungsperiode -->
+						<td><h:inputText
+								value="#{orderitem.item['invoice.period']}" 
+								style="width:100%;">
+							</h:inputText></td>
+
 						<!-- Netto Betrag -->
 						<td style="text-align: right;"><h:inputText
 								value="#{orderitem.item['amount']}" a:data-id="orderitem_amount"
@@ -100,6 +109,7 @@
 					<td />
 					<td />
 					<td />
+					<td />
 					<td data-id="orderlist_summary_net"
 						style="text-align: right; padding-right: 10px; font-wight: normal;"></td>
 					<td data-id="orderlist_summary"
diff --git a/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen_read.xhtml b/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen_read.xhtml
index da74000..a9223a4 100644
--- a/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen_read.xhtml
+++ b/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen_read.xhtml
@@ -17,6 +17,7 @@
 							*</span></th>
 					<th style="width: 100px;">Steuer</th>
 					<th style="width: 100px;">Leistungsart</th>
+					<th style="width: 80px;">BP</th>
 					<th style="width: 150px; text-align: right;">Netto</th>
 					<th style="width: 150px; text-align: right;">Brutto</th>
 				</tr>
@@ -34,6 +35,8 @@
 						<td><h:outputText value="#{orderitem.item['tax']}" /></td>
 
 						<td><h:outputText value="#{orderitem.item['category']}" /></td>
+						
+						<td><h:outputText value="#{orderitem.item['invoice.period']}" /></td>
 
 						<td style="text-align: right;"><h:outputText
 								value="#{orderitem.item['amount']}" /></td>
@@ -49,7 +52,7 @@
 					<td />
 					<td />
 					<td />
-					
+					<td />
 					<td style="text-align: right;">Summe:</td>
 					<td class="orderlist_summary" style="text-align: right;"><h:outputText
 							value="#{workitem.item['order.total.net']}">
diff --git a/pom.xml b/pom.xml
index 74a56f5..8d4dea5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.alexander-logistics</groupId>
 	<artifactId>office-alexander-logistics</artifactId>
-	<version>1.1.0</version>
+	<version>1.1.1</version>
 	<packaging>pom</packaging>
 	<name>Imixs Office Workflow - Custom Build</name>