diff --git a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient4WPS.java b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient4WPS.java
index 6bd4e7e..5cb91c0 100644
--- a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient4WPS.java
+++ b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient4WPS.java
@@ -278,7 +278,12 @@ public class SClient4WPS extends SClient {
 		logger.debug("getOperatorsClassifications: "+refresh);
 		LinkedHashMap<String, String> operatorsToCategoriesMap = new LinkedHashMap<>();
 		LinkedHashMap<String, List<Operator>> categoriesToOperatorsMap = new LinkedHashMap<>();
-
+		
+		if(refresh){
+			logger.debug("Clear Processes Descriptions: Refresh");
+			process.clear();
+		}
+		
 		requestCapability(refresh);
 		if (processesBriefs == null || processesDescriptionType == null) {
 			throw new ServiceException("Algorithms WPS not available!");
@@ -429,7 +434,9 @@ public class SClient4WPS extends SClient {
 		SClient4WPSSession wpsClient = null;
 		processesDescriptionType = null;
 		processesBriefs = null;
-
+		
+		logger.debug("Request Capability: refresh="+refresh);
+		
 		try {
 			wpsClient = createWPSClientSession();
 
diff --git a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/SClient4WPSSession.java b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/SClient4WPSSession.java
index 4f79f5a..58fa330 100644
--- a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/SClient4WPSSession.java
+++ b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/SClient4WPSSession.java
@@ -105,12 +105,12 @@ public class SClient4WPSSession implements Serializable {
 		if (refresh) {
 			logger.debug("LoggedServices: " + loggedServices.keySet());
 			if (loggedServices.containsKey(url)) {
-				loggedServices.remove(url);	
+				loggedServices.remove(url);
 			}
-			if(processDescriptions.containsKey(url)){
+			if (processDescriptions.containsKey(url)) {
 				processDescriptions.remove(url);
 			}
-			
+
 			CapabilitiesDocument capsDoc = retrieveCapsViaGET(url);
 			if (capsDoc != null) {
 				logger.debug("Adding caps to logged services " + url);
@@ -141,7 +141,7 @@ public class SClient4WPSSession implements Serializable {
 			} else {
 				logger.debug("Service not registered");
 			}
-			
+
 			CapabilitiesDocument capsDoc = retrieveCapsViaGET(url);
 			if (capsDoc != null) {
 				logger.debug("Adding caps to logged services " + url);
@@ -238,8 +238,7 @@ public class SClient4WPSSession implements Serializable {
 	 * @throws IOException
 	 *             IOException
 	 */
-	private ProcessDescriptionsDocument getProcessDescriptionsFromCache(String wpsUrl)
-			throws IOException {
+	private ProcessDescriptionsDocument getProcessDescriptionsFromCache(String wpsUrl) throws IOException {
 		if (!descriptionsAvailableInCache(wpsUrl)) {
 			try {
 				connect(wpsUrl);
@@ -321,7 +320,7 @@ public class SClient4WPSSession implements Serializable {
 	public ProcessDescriptionsDocument describeAllProcesses(String url) throws WPSClientException {
 		CapabilitiesDocument doc = loggedServices.get(url);
 		if (doc == null) {
-			logger.warn("serviceCaps are null, perhaps server does not exist");
+			logger.debug("serviceCaps are null, perhaps server does not exist");
 			return null;
 		}
 		ProcessBriefType[] processes = doc.getCapabilities().getProcessOfferings().getProcessArray();
@@ -420,7 +419,7 @@ public class SClient4WPSSession implements Serializable {
 		logger.debug("retrieveCapsViaGET: " + url);
 		ClientCapabiltiesRequest req = new ClientCapabiltiesRequest();
 		url = req.getRequest(url);
-		logger.debug("url req: "+url);
+		logger.debug("url req: " + url);
 		try {
 			String authString = user + ":" + password;
 			logger.debug("auth string: " + authString);
@@ -433,19 +432,19 @@ public class SClient4WPSSession implements Serializable {
 			connection.setRequestMethod("GET");
 			connection.setDoOutput(true);
 			connection.setRequestProperty("Authorization", "Basic " + encoded);
-			logger.debug("Request: "+connection.toString());
+			logger.debug("Request: " + connection.toString());
 			InputStream is = connection.getInputStream();
 			Document doc = checkInputStream(is);
 			CapabilitiesDocument capabilitiesDocument = CapabilitiesDocument.Factory.parse(doc, options);
 			return capabilitiesDocument;
 		} catch (MalformedURLException e) {
-			logger.error(e.getLocalizedMessage(),e);
+			logger.error(e.getLocalizedMessage(), e);
 			throw new WPSClientException("Capabilities URL seems to be unvalid: " + url, e);
 		} catch (IOException e) {
-			logger.error(e.getLocalizedMessage(),e);
+			logger.error(e.getLocalizedMessage(), e);
 			throw new WPSClientException("Error occured while retrieving capabilities from url: " + url, e);
 		} catch (XmlException e) {
-			logger.error(e.getLocalizedMessage(),e);
+			logger.error(e.getLocalizedMessage(), e);
 			throw new WPSClientException("Error occured while parsing XML", e);
 		}
 	}
@@ -501,6 +500,7 @@ public class SClient4WPSSession implements Serializable {
 					options);
 
 			Files.delete(tempFile);
+			logger.debug("RetrieveDescriptions via GET: success");
 			return processDescriptionsDocument;
 
 		} catch (MalformedURLException e) {