BAPI_SC_HEADER_CUST_C 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 "PO Customer Enhancement (create)" 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_BAPI_SC_HEADER_CUST_C TYPE BAPI_SC_HEADER_CUST_C.
The BAPI_SC_HEADER_CUST_C table consists of various fields, each holding specific information or linking keys about PO Customer Enhancement (create) data available in SAP. These include PARENT_GUID (GUID of Higher-Level Record (Header or Item))... 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. .