Index: DOM/PARTIJ/LegacyPartijAPI.cls.xml
===================================================================
diff -u -r29059 -r38756
--- DOM/PARTIJ/LegacyPartijAPI.cls.xml	(.../LegacyPartijAPI.cls.xml)	(revision 29059)
+++ DOM/PARTIJ/LegacyPartijAPI.cls.xml	(.../LegacyPartijAPI.cls.xml)	(revision 38756)
@@ -18,6 +18,12 @@
 <ReturnType>DOM.common.PartijID</ReturnType>
 </Method>
 
+<Method name="IsKlantPartijID">
+<Abstract>1</Abstract>
+<FormalSpec>KlantNummer:%String</FormalSpec>
+<ReturnType>%Boolean</ReturnType>
+</Method>
+
 <Method name="GeefLeverancierNummerVoorPartijID">
 <Abstract>1</Abstract>
 <FormalSpec>PartijID:DOM.common.PartijID</FormalSpec>