ESH_S_CM_SYS_COUP 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 system coupling for Tagging scenarios" 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_ESH_S_CM_SYS_COUP TYPE ESH_S_CM_SYS_COUP.
The ESH_S_CM_SYS_COUP table consists of various fields, each holding specific information or linking keys about structure for system coupling for Tagging scenarios data available in SAP. These include CLIENT (Client), SYS_COUP_GUID (Internal Key for System Coupling), CONN_GUID_USING (Connection GUID), CONN_GUID_USED (Connection GUID)... 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. .