SIBRSTM_HEAD_DEFAULT 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 "Default Fields Broker Report Header" 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_SIBRSTM_HEAD_DEFAULT TYPE SIBRSTM_HEAD_DEFAULT.
The SIBRSTM_HEAD_DEFAULT table consists of various fields, each holding specific information or linking keys about Default Fields Broker Report Header data available in SAP. These include PERDFROM (Invoicing Period From (Broker Report)), PERDTO (Invoicing Period to (Broker Report)), REPTYPE (Broker Report Invoicing Type), INITREAS (Trigger for Creating a Broker Report)... 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. .