FMPP_100 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 "Work Fields for FMPP" 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_FMPP_100 TYPE FMPP_100.
The FMPP_100 table consists of various fields, each holding specific information or linking keys about Work Fields for FMPP data available in SAP. These include BELNR (Accounting Document Number), GJAHR (Fiscal Year), BUZEI (Number of Line Item Within Accounting Document), SPL_NO (Sequence Number of Splitting Information)... 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. .