BUS000MSG_BAL 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 "BDT Message Handler - Context Data for BAL" 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_BUS000MSG_BAL TYPE BUS000MSG_BAL.
The BUS000MSG_BAL table consists of various fields, each holding specific information or linking keys about BDT Message Handler - Context Data for BAL data available in SAP. These include DYNID (Screen), SICHT (View), STEPL (Index of Current Step Loop Row), RLTYP (BDT: Object part)... 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. .