RM52C 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 "Foreign Trade: Structure for Import Simulation" 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_RM52C TYPE RM52C.
The RM52C table consists of various fields, each holding specific information or linking keys about Foreign Trade: Structure for Import Simulation data available in SAP. These include FT_ELAND (Foreign trade: Importing country), FT_REFLD (Foreign trade: Reference country), FT_VERLD (Country of dispatch for Foreign Trade), FT_HERKL (Country of origin of the material)... 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. .