FMAA_BO 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 "FM Account Assignment - Budget Objects" 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_FMAA_BO TYPE FMAA_BO.
The FMAA_BO table consists of various fields, each holding specific information or linking keys about FM Account Assignment - Budget Objects data available in SAP. These include GJAHR (Fiscal Year of Commitment Item), FONDS (Fund), FNAME (Fund name), FDSCR (Description)... 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. .