diff --git a/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/mongo/ProfiledMongoManager.java b/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/mongo/ProfiledMongoManager.java
index 05bc75e..a7b3f69 100644
--- a/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/mongo/ProfiledMongoManager.java
+++ b/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/mongo/ProfiledMongoManager.java
@@ -1263,7 +1263,7 @@ public class ProfiledMongoManager extends MongoManager implements MongoManagerI<
 			return doc;
 		}
 
-		// Changed by Francesco
+		// Added by Francesco
 		RegisteredFileSet fs = null;
 		error = null;
 		Exception filesetExc = null;
@@ -1272,7 +1272,7 @@ public class ProfiledMongoManager extends MongoManager implements MongoManagerI<
 			if (deleteList == null || deleteList.isEmpty()) {
 				error = "List of object going to delete is null or empty";
 				log.warn(error);
-				filesetExc = new ConfigurationException(error);
+				filesetExc = new WebApplicationException(error, Response.Status.BAD_REQUEST);
 			}
 
 			if (error == null) {