KEFV_FVALUE 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 "Distribution Keys: Factor Value Structure" 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_KEFV_FVALUE TYPE KEFV_FVALUE.
The KEFV_FVALUE table consists of various fields, each holding specific information or linking keys about Distribution Keys: Factor Value Structure data available in SAP. These include POPER (Posting period), PERIO (Period/year), VSVAL (Relative distribution factor), VSPRE (Relative distribution factor)... 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. .