Why can't I use a Custom Field or Custom Object as a report filter?
Custom Fields / Custom Objects in Analytics
Oracle Service Cloud, All versions
When using custom fields or custom objects in reporting, you can report on some fields, but not on others. For example, text area fields such as Notes on custom objects, are not available for use in report filters as stated in the 'Specifying filters' section in online documentation.
A field's availability in the Analytics module is based on its analytics usage attribute which can be found in the data dictionary. For more information on the possible values please refer to Answer ID 2611: Accessing the data dictionary.
To access Oracle Service Cloud manuals and documentation online, refer to the Documentation for Oracle Service Cloud Products.