COMT_PRD_KEYCONV 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 "Product Master: Key Conversion" 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_PRD_KEYCONV TYPE COMT_PRD_KEYCONV.
The COMT_PRD_KEYCONV table consists of various fields, each holding specific information or linking keys about Product Master: Key Conversion data available in SAP. These include PRODUCT_GUID (Internal Unique ID of Product), PRODUCT_ID (Product ID), PRODUCT_TYPE (Product Type), OBJECT_FAMILY (Object Family)... 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. .