diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingService.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingService.java
index 6d18fbab78a1db932af9100d75972bca7c81e8c0..b28e26ce8f29e8668f0cd5ecbec9db715db11244 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingService.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingService.java
@@ -236,8 +236,8 @@ public class GeneralInformationChangingService extends
     public IRequestContextProvider requestContextProvider;
 
     @Override
-    @Transactional(readOnly = false)
-    @RolesAllowed(RoleWithHierarchy.INSTANCE_OBSERVER)
+    @Transactional
+    @RolesAllowed(RoleWithHierarchy.SPACE_USER)
     public final boolean registerSamples(
             final String sessionToken,
             final String sampleTypeCode,
@@ -340,7 +340,7 @@ public class GeneralInformationChangingService extends
 
     }
 
-    protected static UploadedFilesBean getUploadedFiles(String sessionKey, HttpSession session)
+    private static UploadedFilesBean getUploadedFiles(String sessionKey, HttpSession session)
     {
         if (session.getAttribute(sessionKey) == null
                 || session.getAttribute(sessionKey) instanceof UploadedFilesBean == false)
@@ -351,7 +351,7 @@ public class GeneralInformationChangingService extends
         return (UploadedFilesBean) session.getAttribute(sessionKey);
     }
 
-    protected static void cleanUploadedFiles(final String sessionKey, HttpSession session,
+    private static void cleanUploadedFiles(final String sessionKey, HttpSession session,
             UploadedFilesBean uploadedFiles)
     {
         if (uploadedFiles != null)
@@ -393,7 +393,7 @@ public class GeneralInformationChangingService extends
         }
     }
 
-    protected final HttpSession getHttpSession()
+    private final HttpSession getHttpSession()
     {
         return getOrCreateHttpSession(false);
     }
@@ -402,4 +402,39 @@ public class GeneralInformationChangingService extends
     {
         return requestContextProvider.getHttpServletRequest().getSession(create);
     }
+
+    //
+    // <TEST IMPLEMENTATION For updateSamples>
+    //
+    @Override
+    @Transactional
+    @RolesAllowed(RoleWithHierarchy.SPACE_USER)
+    public final boolean updateSamples(
+            final String sessionToken,
+            final String sampleTypeCode,
+            final String sessionKey,
+            final String defaultGroupIdentifier)
+    {
+        List<ch.systemsx.cisd.openbis.generic.shared.basic.dto.SampleType> sampleTypes = server.listSampleTypes(sessionToken);
+        ch.systemsx.cisd.openbis.generic.shared.basic.dto.SampleType sampleType = null;
+        for (ch.systemsx.cisd.openbis.generic.shared.basic.dto.SampleType auxSampleType : sampleTypes)
+        {
+            if (auxSampleType.getCode().equals(sampleTypeCode))
+            {
+                sampleType = auxSampleType;
+                break;
+            }
+        }
+
+        BatchSamplesOperation info =
+                parseSamples(sessionToken, sampleType, sessionKey, defaultGroupIdentifier, false, true, null, BatchOperationKind.UPDATE);
+        try
+        {
+            genericServer.updateSamples(sessionToken, info.getSamples());
+            return true;
+        } catch (final ch.systemsx.cisd.common.exceptions.UserFailureException e)
+        {
+            throw UserFailureExceptionTranslator.translate(e);
+        }
+    }
 }
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingServiceLogger.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingServiceLogger.java
index 19d7dc24a6adacac818eda75241840c1ede92bba..fd819e517bfa5bcb5ae906de90cf77d5c2013480 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingServiceLogger.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/api/v1/GeneralInformationChangingServiceLogger.java
@@ -144,6 +144,18 @@ class GeneralInformationChangingServiceLogger extends AbstractServerLogger imple
         return false;
     }
 
+    @Override
+    public boolean updateSamples(String sessionToken, String sampleTypeCode, String sessionKey, String defaultGroupIdentifier)
+    {
+        logAccess(sessionToken, "updateSamples",
+                "sampleTypeCode(%s), sessionKey(%s), defaultGroupIdentifier(%s)",
+                sampleTypeCode,
+                sessionKey,
+                defaultGroupIdentifier);
+
+        return false;
+    }
+
     @Override
     public int getMajorVersion()
     {
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/js/openbis.js b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/js/openbis.js
index c6af848a4478c1027cf2d4b273228827648f9a28..8ffe68e077fc798ee09170fb7f15b6c6ece712e6 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/js/openbis.js
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/js/openbis.js
@@ -1035,22 +1035,6 @@ openbis.prototype.listAttachmentsForSample = function(sampleId, allVersions, act
  * ==========================================================================================
  */
 
-/**
- * @see IGeneralInformationChangingService.registerSamples(String, String, String, String)
- * @method
- */
-openbis.prototype.registerSamples = function(sampleTypeCode, sessionKey, defaultGroupIdentifier, action) {
-	this._internal.ajaxRequest({
-		url: this._internal.generalInfoChangingServiceUrl,
-		data: { "method" : "registerSamples",
-				"params" : [ this.getSession(),
-							 sampleTypeCode,
-							 sessionKey,
-							 defaultGroupIdentifier] },
-		success: action
-	});
-}
-
 /**
  * @see IGeneralInformationChangingService.updateSampleProperties(String, long, Map<String,String>)
  * @method
@@ -1170,6 +1154,38 @@ openbis.prototype.removeFromMetaproject = function(metaprojectId, assignmentsToR
 	});
 }
 
+/**
+ * @see IGeneralInformationChangingService.registerSamples(String, String, String, String)
+ * @method
+ */
+openbis.prototype.registerSamples = function(sampleTypeCode, sessionKey, defaultGroupIdentifier, action) {
+	this._internal.ajaxRequest({
+		url: this._internal.generalInfoChangingServiceUrl,
+		data: { "method" : "registerSamples",
+				"params" : [ this.getSession(),
+							 sampleTypeCode,
+							 sessionKey,
+							 defaultGroupIdentifier] },
+		success: action
+	});
+}
+
+/**
+ * @see IGeneralInformationChangingService.registerSamples(String, String, String, String)
+ * @method
+ */
+openbis.prototype.updateSamples = function(sampleTypeCode, sessionKey, defaultGroupIdentifier, action) {
+	this._internal.ajaxRequest({
+		url: this._internal.generalInfoChangingServiceUrl,
+		data: { "method" : "updateSamples",
+				"params" : [ this.getSession(),
+							 sampleTypeCode,
+							 sessionKey,
+							 defaultGroupIdentifier] },
+		success: action
+	});
+}
+
 /**
  * ============================================================================
  * ch.systemsx.cisd.openbis.plugin.query.shared.api.v1.IQueryApiServer methods
diff --git a/openbis_api/source/java/ch/systemsx/cisd/openbis/generic/shared/api/v1/IGeneralInformationChangingService.java b/openbis_api/source/java/ch/systemsx/cisd/openbis/generic/shared/api/v1/IGeneralInformationChangingService.java
index 255360a46b0751fda896370c4f3d02262f3d914d..d486711380131e6c4a1742869d9f53f67bbe0ab6 100644
--- a/openbis_api/source/java/ch/systemsx/cisd/openbis/generic/shared/api/v1/IGeneralInformationChangingService.java
+++ b/openbis_api/source/java/ch/systemsx/cisd/openbis/generic/shared/api/v1/IGeneralInformationChangingService.java
@@ -151,4 +151,18 @@ public interface IGeneralInformationChangingService extends IRpcService
             final String sampleTypeCode,
             final String sessionKey,
             final String defaultGroupIdentifier);
+
+    /**
+     * Updates samples parsing a file stored on the HTTP Session.
+     * 
+     * @param sampleTypeCode Sample type to parse
+     * @param sessionKey key of the file stored on the HTTP Session
+     * @param defaultGroupIdentifier key of the file stored on the HTTP Session
+     * @since 1.4
+     */
+    public boolean updateSamples(
+            final String sessionToken,
+            final String sampleTypeCode,
+            final String sessionKey,
+            final String defaultGroupIdentifier);
 }