RCAPTR_SOURCE 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 "CAPTR: Fields for the Source Loan" 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_RCAPTR_SOURCE TYPE RCAPTR_SOURCE.
The RCAPTR_SOURCE table consists of various fields, each holding specific information or linking keys about CAPTR: Fields for the Source Loan data available in SAP. These include PARTNR_S (Partner Number), UPOSCURR_S (Position Currency Source Loan (Currency of Postion Amounts)), ARECA_S (Remaining Capital in Source Loan), ARECAAV_S (Available Remaining Capital Source Loan on Transfer Key Date)... 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. .