RFFMFUNFILLED 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 "Unfilled Customer Orders Output" 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_RFFMFUNFILLED TYPE RFFMFUNFILLED.
The RFFMFUNFILLED table consists of various fields, each holding specific information or linking keys about Unfilled Customer Orders Output data available in SAP. These include VBELN (Sales and Distribution Document Number), POSNR (Item number of the SD document), KWMENG (Cumulative Order Quantity in Sales Units), FIRST_KWMENG (Cumulative Order Quantity in Sales Units)... 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. .