Index: WSimpl/AX/CalculatedProduct/ProductUpdater.cls.xml
===================================================================
diff -u -r57288 -r57297
--- WSimpl/AX/CalculatedProduct/ProductUpdater.cls.xml	(.../ProductUpdater.cls.xml)	(revision 57288)
+++ WSimpl/AX/CalculatedProduct/ProductUpdater.cls.xml	(.../ProductUpdater.cls.xml)	(revision 57297)
@@ -84,9 +84,14 @@
 <Implementation><![CDATA[
 	#dim Product As DOM.PM.Product = ""
 	
+	Do ..NeemLockOpProduct(ProductId)
+	
 	Do ..VerwijderProduct(ProductId)
+	
 	Set Product = ..ProductService.GeefProductGemaaktVolgensAxKenmerken(Request, ..ProductDataFactory.MaakProductData(ProductId, DossierNummer))
 	
+	Do ..UnlockProduct(ProductId)
+	
 	Quit Product
 ]]></Implementation>
 </Method>
@@ -105,6 +110,25 @@
 <Implementation><![CDATA[	Quit ..LadeVariantBepaler.Bepaal(ProductId, Kenmerken)
 ]]></Implementation>
 </Method>
+
+<Method name="NeemLockOpProduct">
+<FormalSpec>ProductId:%String</FormalSpec>
+<Private>1</Private>
+<Implementation><![CDATA[
+	Lock +(^KPR(ProductId)#"S"):5
+	
+	If $Test = 0  {
+		Do ##Class(TECH.ExceptionHandler).Throw(##class(TECH.Exceptions.IllegalUsageException).%New("Er zit een exclusive lock op "_$Name(^KPR(ProductId))_". Product wordt NIET geüpdate."))
+	}
+]]></Implementation>
+</Method>
+
+<Method name="UnlockProduct">
+<FormalSpec>ProductId:%String</FormalSpec>
+<Private>1</Private>
+<Implementation><![CDATA[	Lock -(^KPR(ProductId)#"S")
+]]></Implementation>
+</Method>
 </Class>