RMSLS_DATA_SOURCE_KEY_MAP 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 "Key Mapping for Data Origins" 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_RMSLS_DATA_SOURCE_KEY_MAP TYPE RMSLS_DATA_SOURCE_KEY_MAP.
The RMSLS_DATA_SOURCE_KEY_MAP table consists of various fields, each holding specific information or linking keys about Key Mapping for Data Origins data available in SAP. These include EXT_KEY (External Key)... 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. .