VBSSF 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 "SD Documents for Billing Document Collective Run" 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_VBSSF TYPE VBSSF.
The VBSSF table consists of various fields, each holding specific information or linking keys about SD Documents for Billing Document Collective Run data available in SAP. These include SAMMG (Group), VBELN (Sales and Distribution Document Number), FKDAT (Billing date for billing index and printout), VTEXT (Description)... 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. .