Morgan has a report and form on the EMP table. He updated the form by adding a display-only item P5_LOC, and a change event dynamic action on P5_DEPTNO to populate the item using Set Value with this SQL:
select loc from dept
where deptno = :P5_DEPTNO;
When Morgan runs the page, he gets this error:
apex_error_code:
WWV_FLOW_DML.COLUMN_NOT_FOUND
original message: Column LOC not found in table EMP
What should Morgan do to prevent this error?