BAPI_0036_HEADER_GET 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 "Header data for GM entry document (get detail)" 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_0036_HEADER_GET TYPE BAPI_0036_HEADER_GET.
The BAPI_0036_HEADER_GET table consists of various fields, each holding specific information or linking keys about Header data for GM entry document (get detail) data available in SAP. These include VERSION (Plan/Budget Version for GM entry doc.), DOC_DATE (Document Date in Document), PSTNG_DATE (Posting Date in the Document), DOC_TYPE (Budget Document Type)... 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. .