BPI001_NAT 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 "Business Partner - Treasury Attributes - Natural Person" 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_BPI001_NAT TYPE BPI001_NAT.
The BPI001_NAT table consists of various fields, each holding specific information or linking keys about Business Partner - Treasury Attributes - Natural Person data available in SAP. These include PROPRTY_ST (Marital property regime), INCOME_CUR (Currency of Net Income), CHILDREN (Number of Children Belonging to the Business Partner), MEM_HOUSE (Number of People Living in the Household)... 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. .