AD01DYNP4 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 "DI processor screen (Quantities)" 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_AD01DYNP4 TYPE AD01DYNP4.
The AD01DYNP4 table consists of various fields, each holding specific information or linking keys about DI processor screen (Quantities) data available in SAP. These include MEGINV (Quantity that was processed earlier), MEGNYI (Quantity that has not yet been processed), MEGNOT (Quantity never), MEGNOW (Quantity that should be processed now)... 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. .