Problem in Filtering Lov

Question

I have an LOV and two fields in BLOCK. 1-EMpNO 2-ENAME
there is the query
select empno,ename from emp,
Also i have a when-validate-item trigger on empno to filter LOV records,i.e Once a value is selected,it will be omit from the lov until the form is commit.
DECLARE
rg_id RecordGroup;
rec_count NUMBER;
BEGIN
-- Get the record group ID --
rg_id := Find_Group('EMPLOYEE');
-- Get the number of rows --
rec_Count := Get_Group_Row_Count( rg_id );
-- delete the selected row --
FOR j IN 1..rec_Count LOOP
If Get_Group_Number_Cell( 'EMPLOYEE.EMPNO', j ) = :HR_ATTENDANCE_REG.EMPNO Then
Delete_Group_Row( rg_id, j );
exit ;
End if ;
END LOOP;
END;
all is working fine .problem is that when i make changes in query
select empno,ename from emp where emp_type='P'
i got an error
41084-Error Getting Group Cell.

Answer 1

have a look at the properties of your record-group. The last property opens a popup-window with a list of all columns in the record-group. Check the names against the ones you use in your code.