Hi Rusheek
If you use the WEB UI for an account you should see all of the customer / BP's associated transactions.
If you want a more technical solution, you would need to refer to table CRMD_PARTNER
This link has a more content on how it relates to a One Order Object to end up in this table.
CRMD_PARTNER Table with Other table relations | SCN
Effectively you would use the BP GUID from table BUT000 to access this table, then you'd need to filter based on the partner function of that BP in the relevant transaction.
Hope this helps...unfortunately I do not know of any standard function for this off the top of my head.
Regards
Arden