BAPI_0036_SELOBJSYS 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 "GM:Selection criteria for logical system of source document" 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_BAPI_0036_SELOBJSYS TYPE BAPI_0036_SELOBJSYS.
The BAPI_0036_SELOBJSYS table consists of various fields, each holding specific information or linking keys about GM:Selection criteria for logical system of source document data available in SAP. These include OPTION (Selection operator OPTION for range tables), LOW (Logical system of source document), HIGH (Logical system of source document)... 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. .