diff --git a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/SteuerbescheidPlugin.java b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/SteuerbescheidPlugin.java
index 7430eb9..36b1cdd 100644
--- a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/SteuerbescheidPlugin.java
+++ b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/SteuerbescheidPlugin.java
@@ -135,14 +135,17 @@ public class SteuerbescheidPlugin extends AbstractPlugin {
 
         // Beträge subtrahieren....
         double saldo = amount;
-        logger.info("Found " + invoices.size() + " matching invoices...");
+        logger.info("Found " + invoices.size() + " matching invoices for ATC-No: " + atcNummer);
         for (ItemCollection invoice : invoices) {
             workitem.setItemValueUnique("$workitemRef", invoice.getUniqueID());
 
             // suche die Zeile in der die ATC Nummer vorkommt.
             List<ItemCollection> positionen = InvoiceUtil.explodeChildList(invoice);
             for (ItemCollection pos : positionen) {
-                if (atcNummer.equals(pos.getItemValueString("atc.number"))) {
+                // if (atcNummer.equals(pos.getItemValueString("atc.number"))) {
+                // Support both variants....
+                String posAtcNummer = pos.getItemValueString("atc.number");
+                if (!posAtcNummer.isEmpty() && atcNummer.startsWith(posAtcNummer)) {
                     double umsatz = pos.getItemValueDouble("datev.umsatz");
                     logger.info("...Umsatz=" + umsatz);
                     saldo = InvoiceUtil.round(saldo - umsatz);
@@ -160,8 +163,29 @@ public class SteuerbescheidPlugin extends AbstractPlugin {
      */
     protected List<ItemCollection> findInvoices(String atcNumber) {
         List<ItemCollection> result = new ArrayList<ItemCollection>();
+        // String query = "(type:workitem OR type:workitemarchive) AND ($taskid:[5000 TO
+        // 5990])"
+        // + " AND invoice.atc.number:\"" + atcNumber + "\" " + " AND
+        // $workflowgroup:\"Rechnungsausgang\" ";
+
+        /**
+         * Änderung 2.4.2026 - die ATC Nummer ist nun häufig eine Kombination
+         * z.B: 26DE2452CCA004P4R3/ATC400057440320262452
+         * Relevant ist nur der vordere Teil weil nur der vordere in die Invoice
+         * geschrieben wurde.
+         * Deswegen schneiden wir den vorderen Teil ab und suchen mit OR nach beiden
+         * Schreibweisen
+         */
+
         String query = "(type:workitem OR type:workitemarchive) AND ($taskid:[5000 TO 5990])"
-                + " AND invoice.atc.number:\"" + atcNumber + "\" " + " AND $workflowgroup:\"Rechnungsausgang\" ";
+                + " AND ($workflowgroup:\"Rechnungsausgang\") ";
+        if (atcNumber.contains("/")) {
+            String atcNumberShort = atcNumber.substring(0, atcNumber.indexOf("/"));
+            query = query + " AND (invoice.atc.number:\"" + atcNumber + "\" OR invoice.atc.number:\"" + atcNumberShort
+                    + "\") ";
+        } else {
+            query = query + " AND (invoice.atc.number:\"" + atcNumber + "\") ";
+        }
         try {
             result = documentService.find(query, 999, 0, "$created", false);
             return result;