COPA_PRINT_VALUE 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 "Print Line Item: Value Fields" 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_COPA_PRINT_VALUE TYPE COPA_PRINT_VALUE.
The COPA_PRINT_VALUE table consists of various fields, each holding specific information or linking keys about Print Line Item: Value Fields data available in SAP. These include FIELD_VALUE (CO-PA Quantities and value fields), FIELD_UNIT (CO-PA Currency and Unit of Measure Field)... 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. .