RCPS_PPV 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 "Buffering of Process Parameter Value Assignment" 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_RCPS_PPV TYPE RCPS_PPV.
The RCPS_PPV table consists of various fields, each holding specific information or linking keys about Buffering of Process Parameter Value Assignment data available in SAP. These include LINEMODE (Processing Status/Mode of a Record/Step Loop Line), PPV_ID (Process Parameter Value Assignment), CHSTCNT (Change State Counter for Process Parameter Value Assignment), DEL_FLG (Delete Indicator for Process Parameter Value Assignment)... 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. .