CNFA_PARAMS 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 "Parameters in Function Module CNFA_CHOOSE_FIELDS" 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_CNFA_PARAMS TYPE CNFA_PARAMS.
The CNFA_PARAMS table consists of various fields, each holding specific information or linking keys about Parameters in Function Module CNFA_CHOOSE_FIELDS data available in SAP. These include I_FLG_FIELDS (Checkbox), I_FLG_UNITS (Checkbox), I_FLG_LENGTH (Checkbox), I_FLG_FORMAT (Checkbox)... 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. .