CAVE_SLDOC 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 "CAVE: Document Items (Similar to /SAPAPO/SLDOC)" 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_CAVE_SLDOC TYPE CAVE_SLDOC.
The CAVE_SLDOC table consists of various fields, each holding specific information or linking keys about CAVE: Document Items (Similar to /SAPAPO/SLDOC) data available in SAP. These include DELNR (Document Number (Purchasing/Sales...)), DELPS (Item number of the SD document), ACTION (Single-Character Indicator), VG_POSID (GUID for Order 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. .