VCMS_CAG_RULES 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 "Change Document Structure; 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_VCMS_CAG_RULES TYPE VCMS_CAG_RULES.
The VCMS_CAG_RULES table consists of various fields, each holding specific information or linking keys about Change Document Structure; Generated by RSSCD000 data available in SAP. These include MANDT (Client), CAG_RULES_GUID (GUID for Table CMS_CAG_RULES), CAG_POR_GUID (GUID for Table CMS_CAG_POR), BU_PARTNERID (Business Partner Identification Number)... 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. .