CMS_STR_CPY_DATA_GRP 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 "Structure for Data Group" 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_CMS_STR_CPY_DATA_GRP TYPE CMS_STR_CPY_DATA_GRP.
The CMS_STR_CPY_DATA_GRP table consists of various fields, each holding specific information or linking keys about Structure for Data Group data available in SAP. These include DATA_GRP_ID (Group ID for entity)... 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. .