diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverter.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverter.java
index eac8429b582996cb7eee2397fddef6f422db8494..93ef5b5b0abb6f8ed2ad57703766f83e998a6db9 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverter.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverter.java
@@ -313,8 +313,8 @@ public final class EntityPropertiesConverter implements IEntityPropertiesConvert
         }
     }
 
-    public final <T extends EntityPropertyPE> T createProperty(PropertyTypePE propertyType,
-            EntityTypePropertyTypePE entityTypPropertyType, final PersonPE registrator, String value)
+    public final String tryCreateValidatedPropertyValue(PropertyTypePE propertyType,
+            EntityTypePropertyTypePE entityTypPropertyType, String value)
     {
         if (entityTypPropertyType.isMandatory() && value == null)
         {
@@ -325,11 +325,20 @@ public final class EntityPropertiesConverter implements IEntityPropertiesConvert
         {
             final String validated =
                     propertyValueValidator.validatePropertyValue(propertyType, value);
-            return createEntityProperty(registrator, propertyType, entityTypPropertyType, validated);
+            return validated;
         }
         return null;
     }
 
+    public final <T extends EntityPropertyPE> T createValidatedProperty(PropertyTypePE propertyType,
+            EntityTypePropertyTypePE entityTypPropertyType, final PersonPE registrator,
+            String validatedValue)
+    {
+        assert validatedValue != null;
+        return createEntityProperty(registrator, propertyType, entityTypPropertyType,
+                validatedValue);
+    }
+
     public <T extends EntityPropertyPE, P extends IEntityProperty> Set<T> updateProperties(
             Collection<T> oldProperties, EntityTypePE entityType, List<P> newProperties,
             PersonPE registrator)
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBO.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBO.java
index 4bae4196747265735123cdf38905b09925bcf85a..8dd175bdbaccf0ae91dd37833a4f9a81f6e83ded 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBO.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBO.java
@@ -30,6 +30,7 @@ import ch.systemsx.cisd.openbis.generic.shared.dto.EntityPropertyPE;
 import ch.systemsx.cisd.openbis.generic.shared.dto.EntityTypePE;
 import ch.systemsx.cisd.openbis.generic.shared.dto.EntityTypePropertyTypePE;
 import ch.systemsx.cisd.openbis.generic.shared.dto.IEntityPropertiesHolder;
+import ch.systemsx.cisd.openbis.generic.shared.dto.PersonPE;
 import ch.systemsx.cisd.openbis.generic.shared.dto.PropertyTypePE;
 import ch.systemsx.cisd.openbis.generic.shared.dto.Session;
 import ch.systemsx.cisd.openbis.generic.shared.dto.properties.EntityKind;
@@ -141,11 +142,15 @@ public class EntityTypePropertyTypeBO extends AbstractBusinessObject implements
                         .getLabel(), createPlural(size), entityType.getCode()));
             }
         }
+        PersonPE registrator = findRegistrator();
+        String validatedValue =
+                propertiesConverter.tryCreateValidatedPropertyValue(propertyType, assignment,
+                        defaultValue);
         for (IEntityPropertiesHolder entity : entities)
         {
             final EntityPropertyPE property =
-                    propertiesConverter.createProperty(propertyType, assignment, findRegistrator(),
-                            defaultValue);
+                    propertiesConverter.createValidatedProperty(propertyType, assignment,
+                            registrator, validatedValue);
             if (property != null)
             {
                 entity.addProperty(property);
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IEntityPropertiesConverter.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IEntityPropertiesConverter.java
index 7cd45a397d37f05de50e468edeab0e6326ab11a8..77a06a71c5be0905fc69f1ef973a4f154ae8322d 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IEntityPropertiesConverter.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/business/bo/IEntityPropertiesConverter.java
@@ -46,12 +46,19 @@ public interface IEntityPropertiesConverter
             final IEntityProperty[] properties, final String entityTypeCode,
             final PersonPE registrator);
 
+    /**
+     * Returns given value validated and converted for given property type and entity type.
+     * Result may be null if given value is null.
+     */
+    public String tryCreateValidatedPropertyValue(PropertyTypePE propertyType,
+            EntityTypePropertyTypePE entityTypPropertyType, String value);
+
     /**
      * Creates {@link EntityPropertyPE}.
      */
-    public <T extends EntityPropertyPE> T createProperty(PropertyTypePE propertyType,
+    public <T extends EntityPropertyPE> T createValidatedProperty(PropertyTypePE propertyType,
             EntityTypePropertyTypePE entityTypePropertyType, final PersonPE registrator,
-            String value);
+            String validatedValue);
 
     /** Updates Set<T> of properties. */
     public <T extends EntityPropertyPE, P extends IEntityProperty> Set<T> updateProperties(
diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverterTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverterTest.java
index ce5362c832744c0c1539d9b60c649b949d17f8f8..fdfc897d242c0f3eec3ff9a5bfe52826132f98df 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverterTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityPropertiesConverterTest.java
@@ -246,13 +246,15 @@ public final class EntityPropertiesConverterTest extends AbstractBOTest
                     one(propertyValueValidator).validatePropertyValue(propertyType, defaultValue);
                 }
             });
-        assertEquals(registrator, entityPropertiesConverter.createProperty(propertyType,
+        entityPropertiesConverter.tryCreateValidatedPropertyValue(propertyType, assignment,
+                defaultValue);
+        assertEquals(registrator, entityPropertiesConverter.createValidatedProperty(propertyType,
                 assignment, registrator, defaultValue).getRegistrator());
         context.assertIsSatisfied();
     }
 
     @Test(expectedExceptions = UserFailureException.class)
-    public void testCreatePropertyMandatoryWithNullGlobal() throws Exception
+    public void testCreateValidatedPropertyValueMandatoryWithNullGlobal() throws Exception
     {
         final IEntityPropertiesConverter entityPropertiesConverter =
                 createEntityPropertiesConverter(EntityKind.SAMPLE);
@@ -261,15 +263,15 @@ public final class EntityPropertiesConverterTest extends AbstractBOTest
         EntityTypePropertyTypePE assignment =
                 EntityTypePropertyTypePE.createEntityTypePropertyType(entityKind);
         assignment.setMandatory(true);
-        PersonPE registrator = new PersonPE();
         final String defaultValue = null;
-        entityPropertiesConverter.createProperty(propertyType, assignment, registrator,
+
+        entityPropertiesConverter.tryCreateValidatedPropertyValue(propertyType, assignment,
                 defaultValue);
         context.assertIsSatisfied();
     }
 
     @Test
-    public void testCreatePropertyNotMandatoryWithNullGlobal() throws Exception
+    public void testCreateValidatedPropertyValueNotMandatoryWithNullGlobal() throws Exception
     {
         final IEntityPropertiesConverter entityPropertiesConverter =
                 createEntityPropertiesConverter(EntityKind.EXPERIMENT);
@@ -278,10 +280,9 @@ public final class EntityPropertiesConverterTest extends AbstractBOTest
         EntityTypePropertyTypePE assignment =
                 EntityTypePropertyTypePE.createEntityTypePropertyType(entityKind);
         assignment.setMandatory(false);
-        PersonPE registrator = new PersonPE();
         final String defaultValue = null;
-        assertNull(entityPropertiesConverter.createProperty(propertyType, assignment, registrator,
-                defaultValue));
+        assertNull(entityPropertiesConverter.tryCreateValidatedPropertyValue(propertyType,
+                assignment, defaultValue));
         context.assertIsSatisfied();
     }
 }
diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBOTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBOTest.java
index 911fe71e47e88440007c427c0ca8c8ae6173ba2c..07d0e98283bee12704efa0b91b1cbc4767c3cf3f 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBOTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/EntityTypePropertyTypeBOTest.java
@@ -104,7 +104,8 @@ public final class EntityTypePropertyTypeBOTest extends AbstractBOTest
 
         final EntityKind entityKind = EntityKind.EXPERIMENT;
         boolean mandatory = true;
-        final String defaultValue = "50";
+        final String defaultValue = "50.00";
+        final String validatedValue = "50.0";
         final String section = "section 1";
 
         final ExperimentPE experiment = new ExperimentPE();
@@ -132,9 +133,12 @@ public final class EntityTypePropertyTypeBOTest extends AbstractBOTest
                     experimets.add(experiment);
                     will(returnValue(experimets));
 
-                    one(propertiesConverter).createProperty(with(propertyType),
+                    one(propertiesConverter).tryCreateValidatedPropertyValue(with(propertyType),
+                            with(any(ExperimentTypePropertyTypePE.class)), with(defaultValue));
+                    will(returnValue(validatedValue));
+                    one(propertiesConverter).createValidatedProperty(with(propertyType),
                             with(any(ExperimentTypePropertyTypePE.class)),
-                            with(any(PersonPE.class)), with(defaultValue));
+                            with(any(PersonPE.class)), with(validatedValue));
                     will(returnValue(property));
                 }
             });
diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/ExternalDataTableTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/ExternalDataTableTest.java
index 1f8291d881400888e4e04095e82eb1c1914e2179..3c21135b4a5460fffe08e558d2b23e5245f07bc4 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/ExternalDataTableTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/business/bo/ExternalDataTableTest.java
@@ -629,17 +629,6 @@ public final class ExternalDataTableTest extends AbstractBOTest
             });
     }
 
-    private void prepareFlush()
-    {
-        context.checking(new Expectations()
-            {
-                {
-                    one(externalDataDAO).flush();
-                }
-            });
-
-    }
-
     @SuppressWarnings("unchecked")
     private void prepareArchiving(final IDataStoreService service, final DataStorePE store,
             final ExternalDataPE... dataSets)