diff --git a/ReportImp/DieDueneReports/DieDueneReports.csproj b/ReportImp/DieDueneReports/DieDueneReports.csproj
index 16ac492cb..efa9e1c02 100644
--- a/ReportImp/DieDueneReports/DieDueneReports.csproj
+++ b/ReportImp/DieDueneReports/DieDueneReports.csproj
@@ -71,6 +71,8 @@
     <Compile Include="InvoiceCustomerReport.Designer.cs">
       <DependentUpon>InvoiceCustomerReport.cs</DependentUpon>
     </Compile>
+    <Compile Include="Invoicing\CustomInvoiceCreation.cs" />
+    <Compile Include="Invoicing\CustomInvoiceFactory.cs" />
     <Compile Include="Mitarbeiterarbeitszeitkonto.cs">
       <SubType>Component</SubType>
     </Compile>
diff --git a/ReportImp/DieDueneReports/Invoicing/CustomInvoiceCreation.cs b/ReportImp/DieDueneReports/Invoicing/CustomInvoiceCreation.cs
new file mode 100644
index 000000000..74f815a15
--- /dev/null
+++ b/ReportImp/DieDueneReports/Invoicing/CustomInvoiceCreation.cs
@@ -0,0 +1,24 @@
+using BeWo.Data.Entities;
+using BeWo.Service.Invoicing;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DieDueneReports.Invoicing
+{
+    public class CustomInvoiceCreation : InvoiceCreation
+    {
+        public override string GetSummaryItemKey(SupportConceptApprovalPeriod scap, InvoiceItem iitem, bool summaryPerMonth)
+        {
+            String key = String.Format("{0:0.0000}_{1}_{2}", iitem.AmountPerUnit, iitem.RateFactor, iitem.ItemDescription);
+            if (summaryPerMonth)
+            {
+                key = String.Format("{0:0.0000}_{1}_{2:yyyyMM}", iitem.AmountPerUnit, iitem.RateFactor, iitem.ItemPeriodStart);
+            }
+
+            return key;
+        }
+    }
+}
diff --git a/ReportImp/DieDueneReports/Invoicing/CustomInvoiceFactory.cs b/ReportImp/DieDueneReports/Invoicing/CustomInvoiceFactory.cs
new file mode 100644
index 000000000..2c9db1cc1
--- /dev/null
+++ b/ReportImp/DieDueneReports/Invoicing/CustomInvoiceFactory.cs
@@ -0,0 +1,19 @@
+using BeWo.Service.Invoicing;
+using BS.Shared.DataContracts;
+using BS.Shared.DataContracts.Compact;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DieDueneReports.Invoicing
+{
+    public class CustomInvoiceFactory : InvoiceFactory
+    {
+        public override InvoiceCreation CreateInvoiceCreator(string specificId, string tenant, Dictionary<CompactSupportConceptDC, List<ServiceRecordDC>> supportConcepts2ServiceRecords)
+        {
+            return new CustomInvoiceCreation();
+        }
+    }
+}
diff --git a/ReportImp/DieDueneReports/Properties/licenses.licx b/ReportImp/DieDueneReports/Properties/licenses.licx
index e69de29bb..d59547a61 100644
--- a/ReportImp/DieDueneReports/Properties/licenses.licx
+++ b/ReportImp/DieDueneReports/Properties/licenses.licx
@@ -0,0 +1 @@
+DevExpress.XtraReports.UI.XtraReport, DevExpress.XtraReports.v23.2, Version=23.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a