How to execute the Workflow notification Package?and where to check the notification?what is the table effected?

Anonymous Block:

DECLARE
BEGIN
xxram__test_workflow_pkg.send_notification('ram_invnf-1000000');
END;

table effected:
select * from apps.wf_notifications order by begin_date desc

ram_invnf-->lookup_code created and that is used in package
1000000 -->this is request id that should be passed .