COMT_KEYTYPE_APPL 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 "Interface: Applications/Key Types for Generation" 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_KEYTYPE_APPL TYPE COMT_KEYTYPE_APPL.
The COMT_KEYTYPE_APPL table consists of various fields, each holding specific information or linking keys about Interface: Applications/Key Types for Generation data available in SAP. These include KEY_TYPE (Category of Differentiation Key (Gen. Link Handler)), APPLICATION (Application Scenario), BLVIEW (View for UI Display), SCREENVARIANT (Screen Variant)... 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. .