COFP_ONLY 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 "None key fields occurring only in COFP (INCLUDE structure)" 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_COFP_ONLY TYPE COFP_ONLY.
The COFP_ONLY table consists of various fields, each holding specific information or linking keys about None key fields occurring only in COFP (INCLUDE structure) data available in SAP. These include ZHLDT (Funds Management - Update Date), GJAHR (Fiscal Year), PERIO (Period), WRTTP (Value Type)... 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. .