RDEFAULT_UI_FFES 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 "Default: Representation of Charges" 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_RDEFAULT_UI_FFES TYPE RDEFAULT_UI_FFES.
The RDEFAULT_UI_FFES table consists of various fields, each holding specific information or linking keys about Default: Representation of Charges data available in SAP. These include CHARGES (Settlement Amount), POSTINGS (Natural Number), CURR (Currency Key)... 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. .