diff --git a/openbis-ipad/BisKit/Classes/persistent-data-model.xcdatamodeld/persistent-data-model.xcdatamodel/contents b/openbis-ipad/BisKit/Classes/persistent-data-model.xcdatamodeld/persistent-data-model.xcdatamodel/contents
index fd3c08da241eae987aa220afaf94983a70262fbd..f10791dbb94ea0745278ded965c57ae3e09b208d 100644
--- a/openbis-ipad/BisKit/Classes/persistent-data-model.xcdatamodeld/persistent-data-model.xcdatamodel/contents
+++ b/openbis-ipad/BisKit/Classes/persistent-data-model.xcdatamodeld/persistent-data-model.xcdatamodel/contents
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <model name="" userDefinedModelVersionIdentifier="" type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="1810" systemVersion="11G56" minimumToolsVersion="Xcode 4.3" macOSVersion="Automatic" iOSVersion="Automatic">
     <entity name="CISDOBIpadEntity" representedClassName="CISDOBIpadEntity" syncable="YES">
-        <attribute name="entityKind" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="entityType" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="identifier" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="permId" optional="YES" attributeType="String" syncable="YES"/>
+        <attribute name="entityKind" optional="YES" attributeType="String" indexed="YES" syncable="YES"/>
+        <attribute name="entityType" optional="YES" attributeType="String" indexed="YES" syncable="YES"/>
+        <attribute name="identifier" optional="YES" attributeType="String" indexed="YES" syncable="YES"/>
+        <attribute name="permId" optional="YES" attributeType="String" indexed="YES" syncable="YES"/>
         <attribute name="propertiesJson" optional="YES" attributeType="String" syncable="YES"/>
         <attribute name="summary" optional="YES" attributeType="String" syncable="YES"/>
         <attribute name="summaryHeader" optional="YES" attributeType="String" syncable="YES"/>