EBII1 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 "CO/SD document flow: billed portions of expense items" 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_EBII1 TYPE EBII1.
The EBII1 table consists of various fields, each holding specific information or linking keys about CO/SD document flow: billed portions of expense items data available in SAP. These include MANDT (Client), EXPID (Resource Item ID), VBELN (Sales Document), VBPOS (Sales Document Item)... 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. .