diff --git a/dnet-ariadneplus-graphdb-publisher/src/main/java/eu/dnetlib/ariadneplus/elasticsearch/BulkUpload.java b/dnet-ariadneplus-graphdb-publisher/src/main/java/eu/dnetlib/ariadneplus/elasticsearch/BulkUpload.java
index 8b7e66c..4143947 100644
--- a/dnet-ariadneplus-graphdb-publisher/src/main/java/eu/dnetlib/ariadneplus/elasticsearch/BulkUpload.java
+++ b/dnet-ariadneplus-graphdb-publisher/src/main/java/eu/dnetlib/ariadneplus/elasticsearch/BulkUpload.java
@@ -171,6 +171,7 @@ public class BulkUpload {
 //                    log.info("Indexing to ES completed with status: " + bulkResponse.status());
                     if (bulkResponse.hasFailures()) {
                         log.error("FailureMessage: " + bulkResponse.buildFailureMessage());
+                        esResponseCode = -7;
                     }
                 }
                 else {