Thanks for your reply.
I checked the sql error in manuals but i didnot understand it.
I am getting the following error on this sql statement:
Select POLNUM,ACTION,MEMONUM FROM POLMEMO WHERE POLNUM='12239598 'AND MEMONUM = (SELECT MAX(MEMONUM) FROM POLMEMO WHERE POLNUM='12239598 ');
Exception in ROLE OR POLMASTN dbconn

B2 SQL error: SQLCODE: -104, SQLSTATE: 42601, SQLERRMC: ;;POLNUM='12239598 ');END-OF-STATEMENT
Any suggestions would be appreciated.