CIF_ACTCUS 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 "Customer Enhancement Structure for CIF_APOACT" 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_CIF_ACTCUS TYPE CIF_ACTCUS.
The CIF_ACTCUS table consists of various fields, each holding specific information or linking keys about Customer Enhancement Structure for CIF_APOACT data available in SAP. These include ORDNR (Order Number), OPERATION (General counter for order), ACTIVITY (General counter for order)... 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. .