diff --git a/entity/Productprice_entity/Productprice_entity.aod b/entity/Productprice_entity/Productprice_entity.aod
index e45c613aa87e47a9393c254cfb4abfb07fa67268..e85fa3d4f251f41a2f073fe09c3a6b3ab0f93d9c 100644
--- a/entity/Productprice_entity/Productprice_entity.aod
+++ b/entity/Productprice_entity/Productprice_entity.aod
@@ -100,7 +100,6 @@
       <titleProcess>%aditoprj%/entity/Productprice_entity/entityfields/pricelist/titleProcess.js</titleProcess>
       <valueProcess>%aditoprj%/entity/Productprice_entity/entityfields/pricelist/valueProcess.js</valueProcess>
       <displayValueProcess>%aditoprj%/entity/Productprice_entity/entityfields/pricelist/displayValueProcess.js</displayValueProcess>
-      <onValidation>%aditoprj%/entity/Productprice_entity/entityfields/pricelist/onValidation.js</onValidation>
     </entityField>
     <entityParameter>
       <name>ProductId_param</name>
diff --git a/entity/Productprice_entity/entityfields/pricelist/onValidation.js b/entity/Productprice_entity/entityfields/pricelist/onValidation.js
deleted file mode 100644
index 4aacd1ac134be1b8fd4f486e3b195092776ee618..0000000000000000000000000000000000000000
--- a/entity/Productprice_entity/entityfields/pricelist/onValidation.js
+++ /dev/null
@@ -1,22 +0,0 @@
-import("system.translate");
-import("system.result");
-import("system.vars");
-import("Product_lib");
-import("Util_lib");
-import("Entity_lib");
-
-var priceList = {
-                priceList: ProcessHandlingUtils.getOnValidationValue(vars.get("$field.PRICELIST"))
-                , priceListId: vars.get("$field.PRODUCTPRICEID")
-                , fromQuantity: vars.get("$field.FROMQUANTITY")
-                , buySell: vars.get("$field.BUYSELL")
-                , currency: vars.get("$field.CURRENCY")
-                , validFrom: vars.get("$field.VALID_FROM")
-                , validTo: vars.get("$field.VALID_TO")
-            };
-
-var identicalPriceList = ProductUtils.checkForIndenticalPriceLists(vars.get("$field.PRODUCT_ID"), priceList);
-if(identicalPriceList != null)
-{
-    result.string(translate.text("Identical price list found!"));
-}
\ No newline at end of file
diff --git a/entity/Productprice_entity/onValidation.js b/entity/Productprice_entity/onValidation.js
index 6e3b8b5612c52a2218472d4336494029991dd648..fddde143c2d4bb6186ae78d6032f09866ff77610 100644
--- a/entity/Productprice_entity/onValidation.js
+++ b/entity/Productprice_entity/onValidation.js
@@ -1,9 +1,35 @@
+import("Product_lib");
+import("system.translate");
 import("system.result");
 import("Date_lib");
 import("system.vars");
 
+var messages = "";
+
 var startDate = vars.get("$field.VALID_FROM");
 var endDate = vars.get("$field.VALID_TO");
 
 if (!DateUtils.validateBeginnBeforeEnd(startDate, endDate))
-    result.string(DateUtils.getValidationFailString());
\ No newline at end of file
+    messages += DateUtils.getValidationFailString();
+
+var priceList = {
+                priceList: vars.get("$field.PRICELIST"),
+                priceListId: vars.get("$field.PRODUCTPRICEID"),
+                fromQuantity: vars.get("$field.FROMQUANTITY"),
+                buySell: vars.get("$field.BUYSELL"),
+                vat: vars.get("$field.VAT"),
+                currency: vars.get("$field.CURRENCY"),
+                validFrom: vars.get("$field.VALID_FROM"),
+                validTo: vars.get("$field.VALID_TO")
+            };
+
+var identicalPriceList = ProductUtils.checkForIndenticalPriceLists(vars.get("$field.PRODUCT_ID"), priceList);
+if(identicalPriceList != null)
+{
+    if (messages)
+        messages += "\n";
+    messages += translate.text("Identical price list found!");
+}
+
+if (messages)
+    result.string(messages)
\ No newline at end of file
diff --git a/process/Product_lib/process.js b/process/Product_lib/process.js
index 4d5c93b08c4cce458a872e93c6955c99207d1d51..83d5c5066d2d815d081c613e2593082890aa487a 100644
--- a/process/Product_lib/process.js
+++ b/process/Product_lib/process.js
@@ -1,3 +1,4 @@
+import("system.logging");
 import("system.util");
 import("system.SQLTYPES");
 import("system.datetime");
@@ -299,22 +300,25 @@ ProductUtils.getProductDetails = function(pid, priceListFilter, additionalProduc
  * @param {String} pid ProductID
  * @param {Object} priceList { <br>
  *                                  priceList: "keyvalue of keyword 'PRICELIST'" <br>
- *                                  , validFrom: TIMESTAMP <br>
- *                                  , validTo: TIMESTAMP <br>
- *                                  , buySell: "SP" / "PP" <br>
- *                                  , fromQuantity: "fromquantity" <br>
- *                                  , currency: "keyvalue of keyword 'CURRENCY'" <br>
+ *                                  validFrom: TIMESTAMP, <br>
+ *                                  validTo: TIMESTAMP, <br>
+ *                                  buySell: "SP" / "PP", <br>
+ *                                  vat: Number, <br>
+ *                                  fromQuantity: "fromquantity", <br>
+ *                                  currency: "keyvalue of keyword 'CURRENCY'" <br>
  *                             }
  * 
  * @example //Productprice_entity, Field: PRICELIST, Process: onValidation
  *          var pUtils = new ProductUtils();
  *          var priceList = {
- *                          priceList: ProcessHandlingUtils.getOnValidationValue(vars.get("$field.PRICELIST"))
- *                          , fromQuantity: vars.get("$field.FROMQUANTITY")
- *                          , buySell: vars.get("$field.BUYSELL")
- *                          , currency: vars.get("$field.CURRENCY")
- *                          , validFrom: vars.get("$field.VALID_FROM")
- *                          , validTo: vars.get("$field.VALID_TO")
+ *                          priceList: vars.get("$field.PRICELIST"),
+ *                          priceListId: vars.get("$field.PRODUCTPRICEID"),
+ *                          fromQuantity: vars.get("$field.FROMQUANTITY"),
+ *                          buySell: vars.get("$field.BUYSELL"),
+ *                          vat: vars.get("$field.VAT"),
+ *                          currency: vars.get("$field.CURRENCY"),
+ *                          validFrom: vars.get("$field.VALID_FROM"),
+ *                          validTo: vars.get("$field.VALID_TO")
  *                      };
  *
  *          var identicalPriceList = pUtils.checkForIndenticalPriceLists(vars.get("$field.PRODUCT_ID"), priceList);
@@ -328,16 +332,20 @@ ProductUtils.getProductDetails = function(pid, priceListFilter, additionalProduc
 ProductUtils.checkForIndenticalPriceLists = function(pid, priceList) {
     var PriceLists = this.getProductDetails(pid).PriceLists;
 
+    logging.log("PL: " + JSON.stringify(priceList, null, "\t"))
     for (var pricelist in PriceLists) {
         //different pricelist id
         //equal price list
         //equal fromquantity
         //equal currency
         //equal pp/sp
+        //equal vat
+        logging.log(JSON.stringify(PriceLists[pricelist], null, "\t"))
         if (priceList.priceListId != PriceLists[pricelist].priceListId
             && priceList.priceList == PriceLists[pricelist].priceList 
             && parseFloat(priceList.fromQuantity) == parseFloat(PriceLists[pricelist].fromQuantity) 
             && priceList.buySell == PriceLists[pricelist].buySell
+            && parseFloat(priceList.vat) == parseFloat(PriceLists[pricelist].vat)
             && priceList.currency == PriceLists[pricelist].currency) {
             
             //identical validFrom & validTo