diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/shared/ICommonServer.java.expected b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/shared/ICommonServer.java.expected
index 6c3a7330d31f076b26860577f8ddf6fbbe1ae45c..a2a820196e9c08e072147d56dfdba8d1f423514f 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/shared/ICommonServer.java.expected
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/shared/ICommonServer.java.expected
@@ -1000,4 +1000,13 @@ public interface ICommonServer extends IServer
     @DatabaseUpdateModification(value = ObjectKind.VOCABULARY_TERM)
     public void updateVocabularyTerms(String sessionToken, TechId vocabularyId,
             List<VocabularyTerm> terms);
+
+    /**
+     * Deletes specified materials.
+     */
+    @Transactional
+    @RolesAllowed(RoleSet.INSTANCE_ADMIN)
+    @DatabaseCreateOrDeleteModification(value = ObjectKind.MATERIAL)
+    public void deleteMaterials(String sessionToken, List<TechId> materialIds, String reason);
+
 }