MCVBAPADD 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 "Additional Specification: Sales Document - Item Data" 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_MCVBAPADD TYPE MCVBAPADD.
The MCVBAPADD table consists of various fields, each holding specific information or linking keys about Additional Specification: Sales Document - Item Data data available in SAP. These include OAUME (Open orders quantity in base unit of measure), OAUWE (Open net value of orders), OLIME (Open delivery quantity), OLIKW (Open delivery credit value)... 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. .