REPP_FIELDS 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 "Reporting CO-OM : Values of settings" 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_REPP_FIELDS TYPE REPP_FIELDS.
The REPP_FIELDS table consists of various fields, each holding specific information or linking keys about Reporting CO-OM : Values of settings data available in SAP. These include FIELDTYPE (User Settings for CO-OM Reports: Field Type), FLAGTECH (User Settings for CO-OM Reps: Ind. for Technical Parameters), ZEROFLAG (User Settings for CO-OM Reps: Ind. Zero is Valid Entry), FILLMODE (User Settings CO-OM Reporting: Fill Mode w. Report Call)... 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. .