BUSS_MSG_SPECIFIC 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 "Error Messages for Business Partner" 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_BUSS_MSG_SPECIFIC TYPE BUSS_MSG_SPECIFIC.
The BUSS_MSG_SPECIFIC table consists of various fields, each holding specific information or linking keys about Error Messages for Business Partner data available in SAP. These include BPARTNER (Business Partner Number), BPARTNERGUID (GUID of a Business Partner in CHAR 32 Format for BAPIs), IDENTIFICATIONCATEGORY (BP Identification Category), IDENTIFICATIONNUMBER (Identification Number)... 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. .