FTSEL 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 "Selection Indicator Work Area for Reporting in FT" 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_FTSEL TYPE FTSEL.
The FTSEL table consists of various fields, each holding specific information or linking keys about Selection Indicator Work Area for Reporting in FT data available in SAP. These include KWLDI (SLS: Create key words: List output?), DEL_DATA (Foreign trade: Legal control - SLS - Delete old data), CHECK_CORE (Check for different control reasons), SLDKZ (Deletion indicator for entry in sanctioned party list)... 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. .