BUS0MSG1 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 "CBP: Message for each object" 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_BUS0MSG1 TYPE BUS0MSG1.
The BUS0MSG1 table consists of various fields, each holding specific information or linking keys about CBP: Message for each object data available in SAP. These include ARBGB (Message Class), TXTNR (Message Number), MSGV1 (Message Variable), MSGV2 (Message Variable)... 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. .