CCSS_DS 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 "Dynpro fields for selection filter DS_entrys" 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_CCSS_DS TYPE CCSS_DS.
The CCSS_DS table consists of various fields, each holding specific information or linking keys about Dynpro fields for selection filter DS_entrys data available in SAP. These include CB_LART (Restrict Selection: Activity Types), CB_ST_KZ (Restrict Selection: Statistical Key Figures), CB_EP_COST (Restrict Selection: Cost Line Items), CB_EP_LART (Restrict Selection: Activity Type Line Items)... 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. .