RSDMSM_COL_MAP_MODIFY 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 "Modifications to the mapping" 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_RSDMSM_COL_MAP_MODIFY TYPE RSDMSM_COL_MAP_MODIFY.
The RSDMSM_COL_MAP_MODIFY table consists of various fields, each holding specific information or linking keys about Modifications to the mapping data available in SAP. These include SOURCE (Source GUID), OBJVERS (Information for shipment of models), MODEL (Analytical Model), COLUMNNAME (Model Field Name)... 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. .