FMPPS_EF_KBLK 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 "Document Header: Document Entry" 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_FMPPS_EF_KBLK TYPE FMPPS_EF_KBLK.
The FMPPS_EF_KBLK table consists of various fields, each holding specific information or linking keys about Document Header: Document Entry data available in SAP. These include BELNR (Document Number for Earmarked Funds), KVRGNG (Business Transaction), KERFAS (Created by), KERDAT (Entry date)... 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. .