CNBF_CHECKED is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "User filters: fields which do not satisfy the criteria" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_CNBF_CHECKED TYPE CNBF_CHECKED.
The CNBF_CHECKED table consists of various fields, each holding specific information or linking keys about User filters: fields which do not satisfy the criteria data available in SAP. These include INDEX (Line which was checked)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .