BBP_USER_ACC_KEYS 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 "User-Specific: Permitted Catalogs, Texts" 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_BBP_USER_ACC_KEYS TYPE BBP_USER_ACC_KEYS.
The BBP_USER_ACC_KEYS table consists of various fields, each holding specific information or linking keys about User-Specific: Permitted Catalogs, Texts data available in SAP. These include ACC_CAT (Account Assignment Category in SRM), ACC_CAT_TEXT (Account Assignment Category Description in SAP SRM)... 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. .