diff --git a/src/main/java/org/gcube/portal/wssynclibrary/thredds/WorkspaceThreddsSynchronize.java b/src/main/java/org/gcube/portal/wssynclibrary/thredds/WorkspaceThreddsSynchronize.java
index cf542ca..24cfb5c 100644
--- a/src/main/java/org/gcube/portal/wssynclibrary/thredds/WorkspaceThreddsSynchronize.java
+++ b/src/main/java/org/gcube/portal/wssynclibrary/thredds/WorkspaceThreddsSynchronize.java
@@ -209,16 +209,27 @@ public class WorkspaceThreddsSynchronize implements WorkspaceThreddsSynchronized
 
 
 		try {
-			//ThSyncFolderDescriptor descr = checkItemSynched(itemId);
 
 			ThSyncStatus synStatus = mapCallBack.get(itemId);
 
-
 			if(synStatus==null) {
-				logger.info("The sync is not on-going...,returning process status null");
-//				String err = "The item id: "+itemId +" is not cached as synched";
-//				throw new ItemNotSynched(err);
-				return new ThSyncStatus(null, null);
+
+				try{
+
+					registerCallbackForId(itemId);
+					ProcessDescriptor descriptor = engine.getProcessDescriptorByFolderId(itemId);
+					ProcessStatus status = engine.getProcessStatusByFolderId(itemId);
+					updateMapCallback(itemId, status, descriptor);
+					ThSyncStatus thSyncStatus = mapCallBack.get(itemId);
+
+					if(thSyncStatus==null)
+						throw new Exception("No sync status found for item id: "+itemId);
+
+					return thSyncStatus;
+
+				}catch(ProcessNotFoundException e){
+					throw new Exception("Monitor is not available here. The sync process is in progress on another machine");
+				}
 			}
 
 			if(synStatus.getProcessStatus()!=null) {
@@ -233,11 +244,8 @@ public class WorkspaceThreddsSynchronize implements WorkspaceThreddsSynchronized
 			logger.trace("MonitorSyncStatus for item: "+itemId+" returning: "+synStatus);
 			return synStatus;
 
-//		} catch (ItemNotSynched e) {
-//			String err = "The item id: "+itemId +" is not synched repository side";
-//			throw new ItemNotSynched(err);
 		} catch (Exception e) {
-			throw new Exception("Sorry, an error occurred during syncronization for itemId: "+itemId);
+			throw new Exception("Sorry, an error occurred during getting sync status for itemId: "+itemId, e);
 		}
 	}
 
@@ -356,7 +364,7 @@ public class WorkspaceThreddsSynchronize implements WorkspaceThreddsSynchronized
 	 * @throws Exception the exception
 	 */
 	@Override
-	public void registerCallbackForId(String itemId) throws Exception{
+	public void registerCallbackForId(String itemId) throws ProcessNotFoundException, Exception{
 
 		try {
 
@@ -377,8 +385,11 @@ public class WorkspaceThreddsSynchronize implements WorkspaceThreddsSynchronized
 			logger.debug("Registering callback on itemId: "+itemId);
 			engine.registerCallBack(itemId, callback);
 		}catch (ProcessNotFoundException e) {
+			logger.error("Register callback for id: "+itemId+" threw ProcessNotFoundException: ", e);
+			throw e;
+		}catch (Exception e) {
 			logger.error("Register callback exception: ",e);
-			throw new Exception("No Process found for item id: "+itemId+ ", refresh an try again");
+			throw new Exception("An error occurred on registering callback for: "+itemId, e);
 		}
 	}