FMFSSDEF is a standard SAP Table which is used to store Edit Field Status String data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The FMFSSDEF table consists of various fields, each holding specific information or linking keys about Edit Field Status String data available in SAP. These include FSS (Field Status Definition), FIELDNAME (Field name), FLG_HIDE (Checkbox), FLG_OUTPUT (Checkbox)... 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. .