diff --git a/RFXtoRP_HsrReceiptList.ftl b/RFXtoRP_HsrReceiptList.ftl
index 5dc1631..5fcdffb 100644
--- a/RFXtoRP_HsrReceiptList.ftl
+++ b/RFXtoRP_HsrReceiptList.ftl
@@ -36,6 +36,8 @@
           }
           ]
           </#if>
+        <#else>
+          <#stop "Receipt reference is empty">
         </#if>
       <#break>
     <#case "U">