Index: APPS/Halux/AAP/DnaCodeService.cls.xml
===================================================================
diff -u -r63689 -r63707
--- APPS/Halux/AAP/DnaCodeService.cls.xml	(.../DnaCodeService.cls.xml)	(revision 63689)
+++ APPS/Halux/AAP/DnaCodeService.cls.xml	(.../DnaCodeService.cls.xml)	(revision 63707)
@@ -336,7 +336,7 @@
 <ReturnType>%Boolean</ReturnType>
 <Implementation><![CDATA[
 	#dim Resultaat As %Boolean
-	If $$$HasLength(SequentieNummer) {
+	If ($$$HasLength(SequentieNummer) && $$$HasLength(DnaCode.SequentieNummer)) {
 		Set Resultaat = ((DnaCode.ProductNummer = ProductID) && (DnaCode.SequentieNummer = SequentieNummer)) || ..IsSpaceStepGeneriekProduct(DnaCode, ProductID)
 	} Else {
 	 	Set Resultaat = ((DnaCode.ProductNummer = ProductID) || ..IsSpaceStepGeneriekProduct(DnaCode, ProductID))