GRAC_S_LOG_MSG 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 "Structure for audit log" 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_GRAC_S_LOG_MSG TYPE GRAC_S_LOG_MSG.
The GRAC_S_LOG_MSG table consists of various fields, each holding specific information or linking keys about Structure for audit log data available in SAP. These include SYMSGID (Message Class), SYMSGNO (Message Number), SYMSGTY (Message Type), SYMSGV1 (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. .