RCPS_OTPT_BASE_DATA 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 "Basic Data" 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_RCPS_OTPT_BASE_DATA TYPE RCPS_OTPT_BASE_DATA.
The RCPS_OTPT_BASE_DATA table consists of various fields, each holding specific information or linking keys about Basic Data data available in SAP. These include OTYPE_ORGID (Object Type for Responsibility), REALO (Responsibility), REALO_LABEL (Description and Short Text), PROJECT (WBS Element)... 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. .