VWAKC is an SAP Structure so does not store data like a database table does but can be used to process "Structure for Change Documents; Generated by RSSCD000" 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_VWAKC TYPE VWAKC .
Below is the documentation avaialable and full details of the fields which make up this Structure.
|Data Type||length (Decimals)||Check table||Description||Conversion Routine|
|.INCLUDE||WAKC||Assignment of Coupons to Promotion|
|COUPNR||WCOUPNR||CHAR||18||MARA||Material Number of a Coupon||MATN1|
|.INCLUDE||ICDIND||Structures for generating change document update programs|
|KZ||CDCHNGIND||CHAR||1||Change Type (U, I, S, D)|