oracle error-

[RAKESH VERMA]

Hello,
I am presently facing some problem while working on a package which is oracle based.For processing the salary of my organisation,We have procedure for that in different stages.While processing,I ran the procedures successfully except the last one.While running the followin command,the system gave the message-
SQL> EXEC Prc_TrialProc ('None','NOV',2005,'S','D','NRS','DELH');
BEGIN Prc_TrialProc ('None','NOV',2005,'S','D','NRS','DELH'); END;

*
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00201: identifier 'PRC_TRIALPROC' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
Please examine the problem and suggest solution through my e-mail address.Thanks