BDT_TEST_BUT000_FIELDS 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 "Collection of Several BUT000 Fields" 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_BDT_TEST_BUT000_FIELDS TYPE BDT_TEST_BUT000_FIELDS.
The BDT_TEST_BUT000_FIELDS table consists of various fields, each holding specific information or linking keys about Collection of Several BUT000 Fields data available in SAP. These include PARTNER (Business Partner Number)... 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. .