BAPI6102L 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 "Transaction data - List of InfoSources" 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_BAPI6102L TYPE BAPI6102L.
The BAPI6102L table consists of various fields, each holding specific information or linking keys about Transaction data - List of InfoSources data available in SAP. These include TEXTSHORT (Short description), TEXTMEDIUM (Medium description), TEXTLONG (Long description)... 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. .