diff --git a/TDItoRP.ftl b/TDItoRP.ftl
index df37194..0165cbf 100644
--- a/TDItoRP.ftl
+++ b/TDItoRP.ftl
@@ -16,7 +16,7 @@
 		},
 		"ID":
 		{
-		   "RefID": "${tdiEvent.HUReference1}"
+		   "RefID": "${tdiEvent.ParcelNumber!tdiEvent.HUReference1}"
 		},
 		"Payload":
 		{"Events": [