ESH_S_OM_OTYPC_DATA_EXT 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 "Data Fields for OTYPC in external Representation" 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_OM_OTYPC_DATA_EXT TYPE ESH_S_OM_OTYPC_DATA_EXT.
The ESH_S_OM_OTYPC_DATA_EXT table consists of various fields, each holding specific information or linking keys about Data Fields for OTYPC in external Representation data available in SAP. These include CATEGORY_GUID (Category GUID), MODNAM_SEG (Name of Person Who Changed the Segment), TIMESTMP_MOD_SEG (UTC Time Stamp in Short Form (YYYYMMDDhhmmss)), AREA_MOD_SEG (Area)... 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. .