MPN_ATP_MATERIAL 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 "A&D MPN : Interchangeable Parts (MPN Set/FFF class)" 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_MPN_ATP_MATERIAL TYPE MPN_ATP_MATERIAL.
The MPN_ATP_MATERIAL table consists of various fields, each holding specific information or linking keys about A&D MPN : Interchangeable Parts (MPN Set/FFF class) data available in SAP. These include ICTYPE (PIC: Membership Status), MEINS (Base Unit of Measure)... 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. .