VTCOM 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 "Communications Work Area for Cust.Master Accesses" 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_VTCOM TYPE VTCOM.
The VTCOM table consists of various fields, each holding specific information or linking keys about Communications Work Area for Cust.Master Accesses data available in SAP. These include ADRNR (Address), ALAND (Departure country (country from which the goods are sent)), BANKL (Bank number), BANKN (Bank account 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. .