Differences Between Customer Manifest Data and Oracle Manifest Data
All manifest data that replaces the previous configuration in the core_manifest.xml file is seeded in the database that is packaged with the release of Siebel CRM version. You cannot change the Oracle manifest seed data. For any UI Objects record that has been seeded in the database by Oracle, the record itself and all child Object Expression records are read-only.
If you want to customize a given UI Object, then a separate high-level UI Objects record must be created, and the required Object Expression records must be created under it. For example, if a UI Object record with a Name value of Contact List Applet is seeded in the manifest database for the Usage Type Physical Renderer, and if you want to override the configuration with a different implementation of the Physical Renderer, then you must create a new UI Objects record with a Name value of Contact List Applet and a Usage Type value of Physical Renderer, and the Object Expression record you want to create and corresponding Files record must be entered.