diff --git a/distro/changelog.xml b/distro/changelog.xml
index 1181b78..6dd793c 100644
--- a/distro/changelog.xml
+++ b/distro/changelog.xml
@@ -1,4 +1,8 @@
 <ReleaseNotes>
+		<Changeset component="org.gcube.content-management.storage-manager-wrapper.2-5-1" date="2018-10-11">
+			<Change>Constants definition moved on storage-manager-core Castants class</Change>
+			<Change>Added new  Costants class for Junit package</Change>	
+		</Changeset>
 		<Changeset component="org.gcube.content-management.storage-manager-wrapper.2-5-0" date="2017-10-15">
 			<Change>Added new JUnit Test classes</Change>
 			<Change>update JUnit Test Classes</Change>
diff --git a/pom.xml b/pom.xml
index 4aaa974..3f7bbd9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,7 +8,7 @@
   </parent>
   <groupId>org.gcube.contentmanagement</groupId>
   <artifactId>storage-manager-wrapper</artifactId>
-  <version>2.5.0-SNAPSHOT</version>
+  <version>2.5.1-SNAPSHOT</version>
   <scm>
 		<connection>scm:svn:http://svn.d4science.research-infrastructures.eu/gcube/trunk/content-management/${project.artifactId}</connection>
 		<developerConnection>scm:svn:https://svn.d4science.research-infrastructures.eu/gcube/trunk/content-management/${project.artifactId}</developerConnection>
diff --git a/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionById.java b/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionById.java
index 56bea42..e87fb4a 100644
--- a/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionById.java
+++ b/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionById.java
@@ -9,10 +9,9 @@ import org.gcube.common.scope.api.ScopeProvider;
 import org.gcube.contentmanagement.blobstorage.service.IClient;
 import org.gcube.contentmanagement.blobstorage.service.operation.GetHttpUrl;
 import org.gcube.contentmanagement.blobstorage.service.operation.GetUrl;
+import org.gcube.contentmanagement.blobstorage.transport.backend.util.Costants;
 import org.gcube.contentmanager.storageclient.wrapper.AccessType;
-import org.gcube.contentmanager.storageclient.wrapper.Configuration;
 import org.gcube.contentmanager.storageclient.wrapper.MemoryType;
-import org.gcube.contentmanager.storageclient.wrapper.ISClientConnector;
 import org.gcube.contentmanager.storageclient.wrapper.StorageClient;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -66,7 +65,7 @@ public class SMPURLConnectionById extends SMPConnection {
 	
 	protected InputStream storageClient(String url) throws Exception {
 		logger.info("url :" + url);
-		String [] urlParam=url.split(GetUrl.URL_SEPARATOR);
+		String [] urlParam=url.split(Costants.URL_SEPARATOR);
 		String protocol=urlParam[0];
 		protocol=protocol.substring(0, protocol.length()-1);
 		logger.debug("protocol is "+protocol);
@@ -75,9 +74,9 @@ public class SMPURLConnectionById extends SMPConnection {
 		}
 		String encrypted=retrieveStringEncrypted(urlParam);
 		MemoryType memory=null;
-		if(encrypted.contains(GetHttpUrl.VOLATILE_URL_IDENTIFICATOR)){
+		if(encrypted.contains(Costants.VOLATILE_URL_IDENTIFICATOR)){
 			memory=MemoryType.VOLATILE;
-			encrypted=encrypted.replace(GetHttpUrl.VOLATILE_URL_IDENTIFICATOR, "");
+			encrypted=encrypted.replace(Costants.VOLATILE_URL_IDENTIFICATOR, "");
 		}
 		logger.debug("String encrypted "+encrypted);
 		String phrase=retrieveEncryptionPhrase();
@@ -103,7 +102,7 @@ public class SMPURLConnectionById extends SMPConnection {
 		String encrypted=urlParam[3];
 		int i=4;
 		while(i < urlParam.length){
-			encrypted=encrypted+GetUrl.URL_SEPARATOR+urlParam[i];
+			encrypted=encrypted+Costants.URL_SEPARATOR+urlParam[i];
 			i++;
 		}
 		return encrypted;
diff --git a/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionFactory.java b/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionFactory.java
index 8dbec52..9b6a479 100644
--- a/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionFactory.java
+++ b/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionFactory.java
@@ -12,6 +12,7 @@ import org.gcube.common.scope.api.ScopeProvider;
 import org.gcube.common.scope.impl.ScopeBean;
 import org.gcube.common.scope.impl.ScopeBean.Type;
 import org.gcube.contentmanagement.blobstorage.service.operation.GetUrl;
+import org.gcube.contentmanagement.blobstorage.transport.backend.util.Costants;
 import org.gcube.contentmanager.storageclient.protocol.utils.Utils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -47,7 +48,7 @@ public class SMPURLConnectionFactory {
 	 * @return
 	 */
 	private static boolean isIntermediateType(String urlString) {
-		String [] urlParam=urlString.split(GetUrl.URL_SEPARATOR);
+		String [] urlParam=urlString.split(Costants.URL_SEPARATOR);
 		String infraHost=urlParam[2];
 		if(Utils.isScopeProviderMatch(infraHost))
 			return true;
diff --git a/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionOld.java b/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionOld.java
index 9888ce9..9f69dbf 100644
--- a/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionOld.java
+++ b/src/main/java/org/gcube/contentmanager/storageclient/model/protocol/smp/SMPURLConnectionOld.java
@@ -8,7 +8,6 @@ import java.net.URL;
 import org.gcube.common.scope.api.ScopeProvider;
 import org.gcube.contentmanagement.blobstorage.service.IClient;
 import org.gcube.contentmanager.storageclient.wrapper.AccessType;
-import org.gcube.contentmanager.storageclient.wrapper.Configuration;
 import org.gcube.contentmanager.storageclient.wrapper.MemoryType;
 import org.gcube.contentmanager.storageclient.wrapper.StorageClient;
 import org.slf4j.Logger;
diff --git a/src/main/java/org/gcube/contentmanager/storageclient/wrapper/StorageClient.java b/src/main/java/org/gcube/contentmanager/storageclient/wrapper/StorageClient.java
index 2939654..8b75d51 100644
--- a/src/main/java/org/gcube/contentmanager/storageclient/wrapper/StorageClient.java
+++ b/src/main/java/org/gcube/contentmanager/storageclient/wrapper/StorageClient.java
@@ -7,6 +7,7 @@ import org.gcube.contentmanager.storageclient.wrapper.MemoryType;
 import org.gcube.common.scope.api.ScopeProvider;
 import org.gcube.contentmanagement.blobstorage.service.IClient;
 import org.gcube.contentmanagement.blobstorage.service.impl.ServiceEngine;
+import org.gcube.contentmanagement.blobstorage.transport.backend.util.Costants;
 import org.gcube.contentmanager.storageclient.protocol.utils.Utils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -234,9 +235,9 @@ public class StorageClient {
 		if(typeAccess == AccessType.PUBLIC){
 			clientID="";
 		}else if(typeAccess == AccessType.PRIVATE){
-			clientID=ServiceEngine.FILE_SEPARATOR+"home"+ServiceEngine.FILE_SEPARATOR+serviceClass+ServiceEngine.FILE_SEPARATOR+serviceName+ServiceEngine.FILE_SEPARATOR+id;
+			clientID=Costants.FILE_SEPARATOR+"home"+Costants.FILE_SEPARATOR+serviceClass+Costants.FILE_SEPARATOR+serviceName+Costants.FILE_SEPARATOR+id;
 		}else if(typeAccess==AccessType.SHARED){
-			clientID=ServiceEngine.FILE_SEPARATOR+"home"+ServiceEngine.FILE_SEPARATOR+serviceClass+ServiceEngine.FILE_SEPARATOR+serviceName;
+			clientID=Costants.FILE_SEPARATOR+"home"+Costants.FILE_SEPARATOR+serviceClass+Costants.FILE_SEPARATOR+serviceName;
 		}else{
 			throw new IllegalArgumentException("type is not correctly: public, private or shared");
 		}