RMXTS_API_FREL 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 "Permitted Assignments for Objects" 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_RMXTS_API_FREL TYPE RMXTS_API_FREL.
The RMXTS_API_FREL table consists of various fields, each holding specific information or linking keys about Permitted Assignments for Objects data available in SAP. These include TRIALID (Higher-Level Trial)... 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. .