diff --git a/datastore_server/source/java/ch/ethz/sis/openbis/generic/server/dss/plugins/sync/common/entitygraph/SkinnyNode.java b/datastore_server/source/java/ch/ethz/sis/openbis/generic/server/dss/plugins/sync/common/entitygraph/SkinnyNode.java
index 278c2462c101f967772f9ee30876c334aa6524cb..9ee7bd930868326b788743592eace7329959b475 100644
--- a/datastore_server/source/java/ch/ethz/sis/openbis/generic/server/dss/plugins/sync/common/entitygraph/SkinnyNode.java
+++ b/datastore_server/source/java/ch/ethz/sis/openbis/generic/server/dss/plugins/sync/common/entitygraph/SkinnyNode.java
@@ -84,13 +84,15 @@ public class SkinnyNode implements INode
     @Override
     public Map<String, String> getPropertiesOrNull()
     {
-        throw new UnsupportedOperationException();
+        return null;
+        //throw new UnsupportedOperationException();
     }
 
     @Override
     public void addConnection(EdgeNodePair enPair)
     {
-        throw new UnsupportedOperationException();
+        //do nothing
+        //throw new UnsupportedOperationException();
     }
 
 }