ATPGC 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 "Parameter: Quantities and Dates / Results of Check" 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_ATPGC TYPE ATPGC.
The ATPGC table consists of various fields, each holding specific information or linking keys about Parameter: Quantities and Dates / Results of Check data available in SAP. These include TBSTR (Partial commitment date), TBSMG (ATP Server: partial confirmed quantity), GSMNG (ATP Server: Total planned order quantity), 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. .
