RLOS_MODELPARAM 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 "Screen Fields for Model Calculation" 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_RLOS_MODELPARAM TYPE RLOS_MODELPARAM.
The RLOS_MODELPARAM table consists of various fields, each holding specific information or linking keys about Screen Fields for Model Calculation data available in SAP. These include PRODUCT_ID (Product), PURPOSE_OF_LOAN (Purpose of Loan), REQUESTED_AMOUNT (Net Loan Amount), REQUESTED_RATE (Installment Amount Requested by Loan Partner)... 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. .