COMT_COMM_PROD_VAR_MAINTAIN 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 "Variant Data" 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_COMT_COMM_PROD_VAR_MAINTAIN TYPE COMT_COMM_PROD_VAR_MAINTAIN.
The COMT_COMM_PROD_VAR_MAINTAIN table consists of various fields, each holding specific information or linking keys about Variant Data data available in SAP. These include CLIENT (Client), PRODUCT_GUID (Internal Unique ID of Product), FRAGMENT_TYPE (Internal Key of a Set Type), ORDER_GUID (GUID for Engineering Change Order)... 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. .