diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IExternalDataBO.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IExternalDataBO.java
index 5eabf47e589bf52926c39e454b7da87417d26903..63bd7b40936b737d8cdefa7ea51bac6e4ffbc227 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IExternalDataBO.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IExternalDataBO.java
@@ -30,8 +30,10 @@ import ch.systemsx.cisd.openbis.generic.shared.dto.NewProperty;
 import ch.systemsx.cisd.openbis.generic.shared.dto.SamplePE;
 
 /**
+ * @deprecated this code will be removed - use IDataBO if possible
  * @author Franz-Josef Elmer
  */
+@Deprecated
 public interface IExternalDataBO extends IEntityBusinessObject
 {
     /**
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/IExternalDataDAO.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/IExternalDataDAO.java
index 0b46ae7a5360718dee06cdd8cf8cb606e16fb8ef..7d8764d2743b5448dcfd600a6a6dbe975e6f2bea 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/IExternalDataDAO.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/IExternalDataDAO.java
@@ -33,7 +33,7 @@ import ch.systemsx.cisd.openbis.generic.shared.dto.SamplePE;
 /**
  * An interface that contains all data access operations on {@link ExternalDataPE}s.
  * 
- * @deprecated use {@link IDataDAO}
+ * @deprecated this code will be removed, use {@link IDataDAO} if possible
  * @author Christian Ribeaud
  */
 @Deprecated