HR_OBJECTIVES_API.create_Objective() returns with Exception "NO_DATE_FOUND"..

Following is the code that i have used to create an Objective for an Employee (Appraisee). Any one please suggest whats wrong with this code ? I am using EBS r12.1.3

Declare

V_VALIDATE BOOLEAN ;

V_EFFECTIVE_DATE DATE := Trunc(Sysdate) ;

V_BUSINESS_GROUP_ID NUMBER := 5264 ;

V_NAME VARCHAR2(200) := 'Core_Objective_001-API' ;

V_START_DATE DATE := Trunc(Sysdate) ;

V_OWNING_PERSON_ID NUMBER := 6043 ;

V_TARGET_DATE DATE := TO_DATE('31-Jan-2014') ;

V_ACHIEVEMENT_DATE DATE := NULL ;

V_DETAIL VARCHAR2(200) := 'JD Details... JD Details... JD Details... JD Details... ' ;

V_COMMENTS VARCHAR2(200) := 'Entry thru API ..' ;

V_SUCCESS_CRITERIA VARCHAR2(200) := NULL ;