diff --git a/src/main/java/org/gcube/informationsystem/base/reference/AccessType.java b/src/main/java/org/gcube/informationsystem/base/reference/AccessType.java
index 4becb14..5bd4734 100644
--- a/src/main/java/org/gcube/informationsystem/base/reference/AccessType.java
+++ b/src/main/java/org/gcube/informationsystem/base/reference/AccessType.java
@@ -51,28 +51,25 @@ import org.slf4j.LoggerFactory;
 public enum AccessType {
 	
 	PROPERTY_ELEMENT(PropertyElement.class, PropertyElement.NAME, PropertyElementImpl.class, null),
+	PROPERTY_DEFINITION(PropertyDefinition.class, PropertyDefinition.NAME, PropertyDefinitionImpl.class, null),
+	PROPERTY_TYPE(PropertyType.class, PropertyType.NAME, PropertyTypeImpl.class, null),
 	PROPERTY(Property.class, Property.NAME, PropertyImpl.class, null),
 	
-	CONTEXT(Context.class, Context.NAME, ContextImpl.class, null),
-	IS_PARENT_OF(IsParentOf.class, IsParentOf.NAME, IsParentOfImpl.class, null),
-	
-	PROPERTY_DEFINITION(PropertyDefinition.class, PropertyDefinition.NAME, PropertyDefinitionImpl.class, null),
-	
-	// TYPE_DEFINITION(TypeDefinition.class, TypeDefinition.NAME, TypeDefinitionImpl.class, null),
-	PROPERTY_TYPE(PropertyType.class, PropertyType.NAME, PropertyTypeImpl.class, null),
-	ENTITY_TYPE(EntityType.class, EntityType.NAME, EntityTypeImpl.class, null),
-	RELATION_TYPE(RelationType.class, RelationType.NAME, RelationTypeImpl.class, null),
-	
 	ENTITY_ELEMENT(EntityElement.class, EntityElement.NAME, EntityElementImpl.class, null),
+	ENTITY_TYPE(EntityType.class, EntityType.NAME, EntityTypeImpl.class, null),
+	CONTEXT(Context.class, Context.NAME, ContextImpl.class, null),
 	ENTITY(Entity.class, Entity.NAME, EntityImpl.class, null),
 	RESOURCE(Resource.class, Resource.NAME, ResourceImpl.class, DummyResource.class),
 	FACET(Facet.class, Facet.NAME, FacetImpl.class, DummyFacet.class),
 		
 	RELATION_ELEMENT(RelationElement.class, RelationElement.NAME, RelationElementImpl.class, null),
+	RELATION_TYPE(RelationType.class, RelationType.NAME, RelationTypeImpl.class, null),
 	RELATION(Relation.class, Relation.NAME, RelationImpl.class, null),
+	IS_PARENT_OF(IsParentOf.class, IsParentOf.NAME, IsParentOfImpl.class, null),
 	IS_RELATED_TO(IsRelatedTo.class, IsRelatedTo.NAME, IsRelatedToImpl.class, DummyIsRelatedTo.class),
 	CONSISTS_OF(ConsistsOf.class, ConsistsOf.NAME, ConsistsOfImpl.class, null);
 	
+	
 	private static Logger logger = LoggerFactory.getLogger(AccessType.class);
 	
 	private final Class<? extends Element> clz;