diff --git a/src/main/java/org/gcube/portlets/admin/systemservicedefinition/SessionUtil.java b/src/main/java/org/gcube/portlets/admin/systemservicedefinition/SessionUtil.java
index ac62807..a1deb04 100644
--- a/src/main/java/org/gcube/portlets/admin/systemservicedefinition/SessionUtil.java
+++ b/src/main/java/org/gcube/portlets/admin/systemservicedefinition/SessionUtil.java
@@ -3,18 +3,12 @@ package org.gcube.portlets.admin.systemservicedefinition;
 import javax.portlet.ActionRequest;
 import javax.portlet.RenderRequest;
 import javax.portlet.ResourceRequest;
-import javax.servlet.http.HttpServletRequest;
 
-import org.gcube.common.authorization.library.provider.AccessTokenProvider;
 import org.gcube.common.portal.PortalContext;
-import org.gcube.oidc.rest.JWTToken;
-import org.gcube.portal.oidc.lr62.JWTTokenUtil;
-import org.gcube.portal.oidc.lr62.OIDCUmaUtil;
 import org.gcube.portlets.admin.systemservicedefinition.util.UserCredentials;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-
 import com.liferay.portal.model.User;
 import com.liferay.portal.util.PortalUtil;
 
diff --git a/src/main/webapp/html/systemservicedefinition/view.jsp b/src/main/webapp/html/systemservicedefinition/view.jsp
index c013735..c54fb18 100644
--- a/src/main/webapp/html/systemservicedefinition/view.jsp
+++ b/src/main/webapp/html/systemservicedefinition/view.jsp
@@ -141,6 +141,11 @@ function deleteSSD(){
 	
 }
 
+function refreshSSD(){
+	var table = $('#definitionsTable').DataTable();
+	table.ajax.reload();
+}
+
 
 $.fn.dataTable.ext.buttons.createSSD = {
 	    text: '<span class="material-icons">add_circle_outline</span>',
@@ -167,7 +172,7 @@ $.fn.dataTable.ext.buttons.deleteSSD = {
 $.fn.dataTable.ext.buttons.refreshSSD = {
 	    text: '<span class="material-icons">refresh</span>',
 	    action: function ( e, dt, node, config ) {
-	    	table.ajax.reload();
+	    	refreshSSD();
 	    },
 		attr:  {
     		title: 'Refresh',