diff --git a/prototype/src/main/java/org/hso/ecommerce/action/cronjob/ReorderAction.java b/prototype/src/main/java/org/hso/ecommerce/action/cronjob/ReorderAction.java
index 2bad0e0..23599d8 100644
--- a/prototype/src/main/java/org/hso/ecommerce/action/cronjob/ReorderAction.java
+++ b/prototype/src/main/java/org/hso/ecommerce/action/cronjob/ReorderAction.java
@@ -2,7 +2,6 @@ package org.hso.ecommerce.action.cronjob;
 
 import java.sql.Timestamp;
 import java.util.HashMap;
-import java.util.List;
 
 import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction.ArticleIdentifier;
 import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction.Offer;
@@ -12,7 +11,6 @@ import org.hso.ecommerce.api.data.OrderConfirmation;
 import org.hso.ecommerce.entities.shop.Article;
 import org.hso.ecommerce.entities.supplier.ArticleOffer;
 import org.hso.ecommerce.entities.supplier.SupplierOrder;
-import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -22,21 +20,21 @@ public class ReorderAction {
     private Article article;
     private Integer[] orderedAmounts;
     private Integer undeliveredReorders;
-    private List<WarehouseBookingPositionSlotEntry> inStock;
+    private int amountInStock;
     private HashMap<ArticleIdentifier, Offer> cheapestOffer;
     private HashMap<ArticleIdentifier, ArticleOffer> articleOffers;
 
     public ReorderAction(
             Article article, Integer[] orderedAmounts,
             Integer undeliveredReorders,
-            List<WarehouseBookingPositionSlotEntry> inStock,
+            int amountInStock,
             HashMap<ArticleIdentifier, Offer> cheapestOffer,
             HashMap<ArticleIdentifier, ArticleOffer> articleOffers
     ) {
         this.article = article;
         this.orderedAmounts = orderedAmounts;
         this.undeliveredReorders = undeliveredReorders;
-        this.inStock = inStock;
+        this.amountInStock = amountInStock;
         this.cheapestOffer = cheapestOffer;
         this.articleOffers = articleOffers;
     }
@@ -45,14 +43,6 @@ public class ReorderAction {
         return input == null ? 0 : input;
     }
 
-    private int getAmountInStock() {
-        int sum = 0;
-        for (WarehouseBookingPositionSlotEntry entry : inStock) {
-            sum += entry.newSumSlot;
-        }
-        return sum;
-    }
-
     private int calculateAmountToReorder() {
         // Algorithm as described in the documentation
         int a = null_to_zero(orderedAmounts[0]);
@@ -68,11 +58,9 @@ public class ReorderAction {
         }
 
         int i = null_to_zero(undeliveredReorders);
-        int l = getAmountInStock();
+        int l = amountInStock;
 
-        int o = n - i - l;
-
-        return o;
+        return n - i - l;
     }
 
     public SupplierOrder finish() {
diff --git a/prototype/src/main/java/org/hso/ecommerce/controller/cronjob/CronjobController.java b/prototype/src/main/java/org/hso/ecommerce/controller/cronjob/CronjobController.java
index 143f1cf..e2bad65 100644
--- a/prototype/src/main/java/org/hso/ecommerce/controller/cronjob/CronjobController.java
+++ b/prototype/src/main/java/org/hso/ecommerce/controller/cronjob/CronjobController.java
@@ -24,7 +24,6 @@ import org.hso.ecommerce.entities.shop.Article;
 import org.hso.ecommerce.entities.supplier.ArticleOffer;
 import org.hso.ecommerce.entities.supplier.Supplier;
 import org.hso.ecommerce.entities.supplier.SupplierOrder;
-import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
 import org.hso.ecommerce.repos.booking.BookingAccountEntryRepository;
 import org.hso.ecommerce.repos.booking.BookingRepository;
 import org.hso.ecommerce.repos.cronjob.BackgroundJobRepository;
@@ -68,8 +67,6 @@ interface ICronjob {
 
 @Component
 class Reorder implements ICronjob {
-    private static final Logger log = LoggerFactory.getLogger(Reorder.class);
-
     @Override
     public Calendar nextExecution(Calendar reference) {
         if (reference.get(Calendar.HOUR_OF_DAY) >= 8) {
@@ -162,12 +159,12 @@ class Reorder implements ICronjob {
             Integer undeliveredReorders = controller.supplierOrderRepository
                     .countUndeliveredReorders(article.related.articleNumber);
 
-            List<WarehouseBookingPositionSlotEntry> inStock = controller.warehouseBookingPositionSlotEntryRepository
-                    .getByArticle(article.id);
+            int amountInStock = controller.warehouseBookingPositionSlotEntryRepository.getArticleStock(article.id)
+                    .orElse(0);
 
             ReorderAction action = new ReorderAction(article, orderedAmounts,
                     undeliveredReorders,
-                    inStock,
+                    amountInStock,
                     supplierData.cheapestOffer, mappedOffers);
             SupplierOrder order = action.finish();
             if (order != null) {
diff --git a/supplier/src/main/java/org/hso/ecommerce/supplier/ConfigurationReader.java b/supplier/src/main/java/org/hso/ecommerce/supplier/ConfigurationReader.java
index f4e4e20..79782d6 100644
--- a/supplier/src/main/java/org/hso/ecommerce/supplier/ConfigurationReader.java
+++ b/supplier/src/main/java/org/hso/ecommerce/supplier/ConfigurationReader.java
@@ -25,7 +25,7 @@ public class ConfigurationReader {
                 try {
                     String jsonData = Files.readString(path, StandardCharsets.UTF_8);
                     ObjectMapper objectMapper = new ObjectMapper();
-                    Supplier sup = (Supplier)objectMapper.readValue(jsonData, Supplier.class);
+                    Supplier sup = objectMapper.readValue(jsonData, Supplier.class);
                     System.out.println("Loaded " + sup.id);
                     return sup;
                 } catch (IOException e) {