Query to get request group name from request set

  SELECT frs.request_set_name,
       --frs.description AS request_set_description,
       frg.request_group_name,
       frg.description AS request_group_description
FROM   apps.fnd_request_sets frs
JOIN   apps.fnd_request_group_units frgu
       ON frs.request_set_id = frgu.request_unit_id
JOIN   apps.fnd_request_groups frg
       ON frgu.request_group_id = frg.request_group_id
WHERE  frs.request_set_name = 'SAMPLE_REQ_SET_NAME';