NET_TAB 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 "CN10: Network Information for BOM Transfer" 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_NET_TAB TYPE NET_TAB.
The NET_TAB table consists of various fields, each holding specific information or linking keys about CN10: Network Information for BOM Transfer data available in SAP. These include AUFPL (Routing number of operations in the order), RSNUM (Number of Reservation/Dependent Requirement), VBELN (Sales Order Number), VBELP (Item Number in Sales Order)... 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. .