VBKAKOM 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 "Communication Structure for Creating / Changing Sales Activ." 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_VBKAKOM TYPE VBKAKOM.
The VBKAKOM table consists of various fields, each holding specific information or linking keys about Communication Structure for Creating / Changing Sales Activ. data available in SAP. These include REFOBJECTLOGSYS (Logical system), REFOBJECTTYPE (Object Type), REFOBJECTKEY (Object key), REFDOCTYPE (Document type of reference object)... 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. .