can ado.net sqlcommandbuilder multiple keys?

i have database list 6 columns. primary pivotal multiple pivotal finished adult 5 6 columns

i am perplexing sqlclient.sqlcommandbuilder.getdeletecommand mislay row.

however i am removing following error:

"system.invalidoperationexception : enterprising sql date the
deletecommand upheld opposing selectcommand does not
relapse any pivotal buttress information."

the selectcommmand contains columns table:

select  tablename.col1, tablename.col2, tablename.col3, 
        tablename.col4, tablename.col5, tablename.col6
from tablename  

could problem multiple key?