diff --git a/src/services/PositionService.ts b/src/services/PositionService.ts
index 0562f458..1b30f980 100644
--- a/src/services/PositionService.ts
+++ b/src/services/PositionService.ts
@@ -60,11 +60,11 @@ export async function CreatePosMasterHistoryOfficer(
           h.firstName = pm.current_holder?.firstName || _null;
           h.lastName = pm.current_holder?.lastName || _null;
           h.profileId = pm.current_holder?.id || _null;
-          h.rootDnaId = pm.orgRoot.ancestorDNA || _null;
-          h.child1DnaId = pm.orgChild1.ancestorDNA || _null;
-          h.child2DnaId = pm.orgChild2.ancestorDNA || _null;
-          h.child3DnaId = pm.orgChild3.ancestorDNA || _null;
-          h.child4DnaId = pm.orgChild4.ancestorDNA || _null;
+          h.rootDnaId = pm.orgRoot?.ancestorDNA || _null;
+          h.child1DnaId = pm.orgChild1?.ancestorDNA || _null;
+          h.child2DnaId = pm.orgChild2?.ancestorDNA || _null;
+          h.child3DnaId = pm.orgChild3?.ancestorDNA || _null;
+          h.child4DnaId = pm.orgChild4?.ancestorDNA || _null;
         } else {
           h.prefix = pm.next_holder?.prefix || _null;
           h.firstName = pm.next_holder?.firstName || _null;