GMIS 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 "Reporting for table GMIT" 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_GMIS TYPE GMIS.
The GMIS table consists of various fields, each holding specific information or linking keys about Reporting for table GMIT data available in SAP. These include ID (Internal: Node ID), VERSN (Financial Statement Version), ERGSL (Financial Statement Item), CURTP (Currency Type for Sales Segments)... 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. .