diff --git a/RFXtoRP_HsrPrepa_GoodsPrepared.ftl b/RFXtoRP_HsrPrepa_GoodsPrepared.ftl
index 62a0a16..607fcd3 100644
--- a/RFXtoRP_HsrPrepa_GoodsPrepared.ftl
+++ b/RFXtoRP_HsrPrepa_GoodsPrepared.ftl
@@ -93,7 +93,7 @@
                                             <#assign priority_date = preparationOrder.stock_despatch_at_preparation_datetime?datetime(rfx_date_format_default)?iso_utc />
                                             "PriorityDate": "${priority_date}",
                                               <#else>
-                                                  "PriorityDate": "error_date",
+                                                  "PriorityDate": "1970-01-01T00:00:00Z",
                                                 </#if>
                                           </#if>
                                     </#if>