When trying to report on the table Test Result [sys_atf_test_result], user is seeing error message 'ERROR: Cannot generate the report. Access to this content denied based on the report_on ACLs'
There is a system property which allows certain system tables to be reported on. This system property can be found here: https://support.servicenow.com/kb_view.do?sys_kb_id=85f6286adb4eebc01089e15b8a96196d
According to this system property, the table Test Result [sys_atf_test_result] is not one of the values. For any other desired system tables, please check to see if these tables are listed in the default values.