CREATE FUNCTION com.fn_zbcmcode(vcdgroupid VARCHAR(5), vcdid VARCHAR(15))
RETURNS VARCHAR(500)

BEGIN ATOMIC

 DECLARE scdnm    VARCHAR(500);

          SET scdnm = (SELECT a.cdnm cdnm
                         FROM COM.ZBCMCODE a
                        WHERE a.cdgrupid  = vcdgroupid
                          AND a.cdid      = vcdid);

  RETURN scdnm;
END;

 이걸 실행하면

ERROR [42501] [IBM][DB2/HPUX-IA64] SQL0551N  "COMU01" does not have the privilege to perform operation "CREATE FUNCTION" on object "COM.FN_ZBCMCODE".  LINE NUMBER=14.  SQLSTATE=42501

이런 오류가 나는데 고수분들의 조언 부탁드립니다.