FMFG_IMP_RC_FIELDS 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 "Data Collection fields for Improper Reason Code" 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_FMFG_IMP_RC_FIELDS TYPE FMFG_IMP_RC_FIELDS.
The FMFG_IMP_RC_FIELDS table consists of various fields, each holding specific information or linking keys about Data Collection fields for Improper Reason Code data available in SAP. These include GJAHR (Fiscal Year), BELNR (Accounting Document Number), XBLNR (Reference Document Number), BLDAT (Document Date in Document)... 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. .