DPR_TS_API_LONGTEXT 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 "API: Attributes of Long Text" 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_DPR_TS_API_LONGTEXT TYPE DPR_TS_API_LONGTEXT.
The DPR_TS_API_LONGTEXT table consists of various fields, each holding specific information or linking keys about API: Attributes of Long Text data available in SAP. These include GUID (Unique Object Key), LANGUAGE (External Language Key), LONGTEXT (Long Text)... 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. .